- NZNOG - lists.nznog.org

missing router
by Richard Naylor 21 Dec '98

21 Dec '98

Hi folks We have had a Cisco 3600 router removed from our premises in an un-authorised manner - it was nicked. If you get offered a real cheap one with the following config please let me know asap. + no system memory (someone else borrowed it !) + 1x 10/100 ethernet port + 18 Voice ports in a mixed config Unfortunately it was not rack mounted, so was easily removed no crow-bar was required. We also lost a diskless 386 - a DECpc320 configured as a Netramet box, and a Compaq 386 running linux as a secondary DNS server. We are very happy to receive any othe the gear back - no questions asked, rather than see it all go into the harbour. Happy Christmas rich richard.naylor(a)citylink.co.nz This mail message contains information that is confidential and which may be subject to legal privilege. If you are not the intended recipient, you must not use, distribute or copy this message. If you have received this message in error, please notify the sender immediately and erase this mail. --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Workshop on Broadband Networks January
by John G. Cleary 21 Dec '98

21 Dec '98

Hello, I have included below an adverstisment for a workshop on broadband networksthat will be heldat Waikato University on january 21st and 22nd. If you think this would be of interest to anyone within your comapny or any of your customers could you please circulate it. Thank you, John Cleary John G. Cleary Dept. Computer Science, Ph(work): 64(7)838-4378 University of Waikato, Ph(home): 64(7)855-0965 Te Whare Wananga o Waikato, Fax: 64(7)838-4155 Private Bag 3105, e-mail: jcleary(a)cs.waikato.ac.nz Hamilton, New Zealand URL: http://www.cs.waikato.ac.nz/cs/Staff/jgc.html =================================================== Networks-99 sponsored by WAND (Waikato Applied Network Dynamics) Research Group The University of Waikato 21 - 22 January 1999 On the 21st and 22nd January 1999 the third New Zealand ATM and Broadband Workshop will be held at the University of Waikato in Hamilton. The workshop is a forum for the discussion and dissemination of information, ideas and research into broadband issues, including the Internet. Topics at previous workshops have ranged from connecting a doorbell to an ATM network to the statistics of self-similar traffic on the Internet. The first day of the conference comprises two tutorials entitled "Introduction to TCP/IP" and " The Ubiquitous Internet as Seen from Silicon Valley". The second tutorial will be presented by Dr. David Jefferson from the Compaq Network Systems Laboratory at Palo Alto. The second day will contain presentations from Industry in the morning followed by research papers in the afternoon. The cost is $100 for each tutorial and $50 for the conference itself. For further information see "http://byerley.cs.waikato.ac.nz/networks/", email "mailto:NetWorks(a)cs.waikato.ac.nz" or phone +64 7 838 4021. =========================================== John G. Cleary Dept. Computer Science, Ph(work): 64(7)838-4378 University of Waikato, Ph(home): 64(7)855-0965 Te Whare Wananga o Waikato, Fax: 64(7)838-4155 Private Bag 3105, e-mail: jcleary(a)cs.waikato.ac.nz Hamilton, New Zealand URL: http://www.cs.waikato.ac.nz/cs/Staff/jgc.html --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Advance notice for 1q99 walk
by bmanning＠ISI.EDU 20 Dec '98

20 Dec '98

Hi, I appologize for duplicates. Its almost time for the next quarterly walk of the inverse tree of the DNS. For the last few quarters, I've been walking the in-addr tree looking for numbers of delegations, accurate delegations, and types and styles of error conditions. So... this is a heads up that you will be seeing zone transfers being generated by a couple of the collecter machines here. For those of you who utilize BINDs access controls, I'd appreciate your inclusion of the collector machines in allowed transfers. The expectation is that they will be the following IP addresses: 128.9.160.57 and 198.32.4.13 If there are any questions or concerns, I'd be happy to talk about them. Past data has been presented at IEPG, Apricot and RIPE meetings. The expectation is that future data will be presented in the same and similar forums. The expected start date is 01jan99 and it is expected to run through February 1999. The 4q98 and preliminary data for the 1q99 audits will be presented at Apricot99 in Singapore. www.apricot.net for details about this venue. The data will be available via http as well. www.isi.edu/div7/people/bmanning.home/in-addr-audit.html --bill --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Workshop on Broadband Networks January
by John G. Cleary 20 Dec '98

20 Dec '98

Networks-99 sponsored by WAND (Waikato Applied Network Dynamics) Research Group The University of Waikato 21 - 22 January 1999 On the 21st and 22nd January 1999 the third New Zealand ATM and Broadband Workshop will be held at the University of Waikato in Hamilton. The workshop is a forum for the discussion and dissemination of information, ideas and research into broadband issues, including the Internet. Topics at previous workshops have ranged from connecting a doorbell to an ATM network to the statistics of self-similar traffic on the Internet. The first day of the conference comprises two tutorials entitled "Introduction to TCP/IP" and " The Ubiquitous Internet as Seen from Silicon Valley". The second tutorial will be presented by Dr. David Jefferson from the Compaq Network Systems Laboratory at Palo Alto. The second day will contain presentations from Industry in the morning followed by research papers in the afternoon. The cost is $100 for each tutorial and $50 for the conference itself. For further information see "http://byerley.cs.waikato.ac.nz/networks/", email "mailto:NetWorks(a)cs.waikato.ac.nz" or phone +64 7 838 4021. =========================================== John G. Cleary Dept. Computer Science, Ph(work): 64(7)838-4378 University of Waikato, Ph(home): 64(7)855-0965 Te Whare Wananga o Waikato, Fax: 64(7)838-4155 Private Bag 3105, e-mail: jcleary(a)cs.waikato.ac.nz Hamilton, New Zealand URL: http://www.cs.waikato.ac.nz/cs/Staff/jgc.html --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Re: Appeal to end-users regarding IP address aggregation -Document posting comments -Reply
by Michael Newbery 09 Dec '98

09 Dec '98

> > >>>> Donald Neal <Donald.Neal(a)telecom.co.nz> - 10/12/98 11:57 AM >>> >Craig Anderson at 10/December/1998 10:36am wrote: >[...] >>There are other problems, but i'm not entirely sure of the nature of >>this document, nor it's audience. I suspect Telecom intends to >>distribute this much wider than just to it's clients. The implied >>support from NZNOG for all of the statements contained within bothers >>me. > >I for one hope a document more or less like this is to be widely >distributed. > >In general it's desirable to avoid claiming NZNOG supports things, since >NZNOG isn't an organisation with a process for declaring the >organisation's opinion on something. However, if the meeting minutes >already posted to this list are accurate, many active NZNOG participants >do support the aproach outlined. In that case replacing the existing text >with a reference to "many members of NZNOG" or "acting in consultation >through the New Zealand Network Operators' Group" would make me >happier, but wouldn't make a difference to the average recipient. Which is fine, until it gets reported in the press in a more concise form, as "support from NZNOG" rathrer than the more precise but less snappy "support from many members of NZNOG" or so forth. Not that there is much that can be done about the vagaries of reporters. The problem is surely that NZNOG is a mailing list, no more. We exist to get things done, not to make pronouncements :-) --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Re: Appeal to end-users regarding IP address aggregation - Document posting comments -Reply
by Donald Neal 09 Dec '98

09 Dec '98

Craig Anderson at 10/December/1998 10:36am wrote: [...] >There are other problems, but i'm not entirely sure of the nature of >this document, nor it's audience. I suspect Telecom intends to >distribute this much wider than just to it's clients. The implied >support from NZNOG for all of the statements contained within bothers >me. I for one hope a document more or less like this is to be widely distributed. In general it's desirable to avoid claiming NZNOG supports things, since NZNOG isn't an organisation with a process for declaring the organisation's opinion on something. However, if the meeting minutes already posted to this list are accurate, many active NZNOG participants do support the aproach outlined. In that case replacing the existing text with a reference to "many members of NZNOG" or "acting in consultation through the New Zealand Network Operators' Group" would make me happier, but wouldn't make a difference to the average recipient. - Donald Neal --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Revision to Acceptable Use Policy?
by Donald Neal 09 Dec '98

09 Dec '98

People, The following is a revised version of the posting I send to this list each month, including an acceptable use policy revised as proposed by Joe Abley with some wording changes by me. Are there any objections to the policy in the form in which it appears below? - Donald Neal - - - - - The New Zealand Network Operators' Group The New Zealand Network Operators' Group (NZNOG) has neither a king, a president nor a formal membership. At present it consists of the subscribers to this mailing list, which anyone is free to join. (At last count the list had 62 subscribers.) The NZNOG mailing list is provided through a server at The University of Waikato, and is administered by an employee of Telecom NZ Ltd. Neither of these organisations (nor the administrator) is responsible for its content. NZNOG Mailing List Acceptable Use Policy The NZNOG mailing list exists to provide a forum for the exchange of technical information and the discussion of implementation issues that require cooperation among New Zealand network service providers. In order to continue to provide a useful forum for discussion of relevant technical issues, users of the list are asked to respect the following guidelines. 1. Discussion will focus on Internet operational and technical issues. 2. Discussion related to meetings of network service providers is appropriate. 3. Discussion unrelated to these topics is not appropriate. 4. Postings to multiple mailing lists are discouraged. 5. Postings that include foul language, character assassination, and lack of respect for other participants are unacceptable. 6. Blatant product or service marketing is unacceptable. 7. Postings of a political, philosophical or legal nature are discouraged. 8. Postings to the list should be in ASCII or MIME encoded as text/plain. Attachments should not be sent to the list. To present a document,. a suitable URL may be referred to. For documents of general interest, the use of proprietary file formats is discouraged. 9. Breaches of list etiquette should be dealt with privately with the offending list user, and should not result in complaints being sent to the list. Mailing List Archives A full archive is available at http://list.waikato.ac.nz/archives/nznog/ To search the archive, see http://list.waikato.ac.nz/archives/search.html (and remember to select nznog). Subscribing to the List To subscribe to the NZNOG list, send email to majordomo(a)list.waikato.ac.nz, where the body of the message reads subscribe nznog There are at present no restrictions on who may subscribe to the list, or even on who may post to the list. Digest Mailing List If you don't wish to receive postings as they are sent, you can instead subscribe to the nznog-digest mailiing list, on which all postings are sent out in a single "digest" every couple of days. Other Activities NZNOG does not at present have other regular activities than this mailing list, though some Auckland subscribers have been known to arrange meetings over beer. Donald Neal NZNOG Mailing List Owner/Administrator/Muggins --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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Re: Appeal to end-users regarding IP address aggregation - Document posting comments
by craig＠laptop.iprolink.co.nz 09 Dec '98

09 Dec '98

Hi. I include the document in a reasonable format below. I'm concerned about several things in this document. One being, this idea of International and National ISPs and the naming of a set of ISPs as this seems to be included only for commercial reasons and is seriously misleading. >From the document: > It is estimated that the frequency and impact of dampening and > filtering by overseas suppliers will increase over the next few years > to the point where un-aggregated address space cannot be guaranteed to > have reliable connectivity or be routed internationally. This is, at best, misleading. At worst it's simply untrue. There is no reasonable basis on which to make such an estimation. There are other problems, but i'm not entirely sure of the nature of this document, nor it's audience. I suspect Telecom intends to distribute this much wider than just to it's clients. The implied support from NZNOG for all of the statements contained within bothers me. -Craig ---------- Date XXX XXX Customer Company Private Bag YYY City Dear XXX An Appeal to Internet Users in NZ - IP Address Aggregation International ISP's in New Zealand are working closely with APNIC as well as many other ISPs, to consolidate existing IP addresses into internationally aggregated, routable blocks. This initiative is recognised by the New Zealand Network Operators' Group (NZNOG), International Internet numbering authorities such as APNIC and IANA, and ISP's world-wide, as being necessary for the good of the Internet as a whole, and will help ensure reliable connectivity for all New Zealand Internet users. This is an appeal for end-user organisations to get behind the drive to tidy up New Zealand allocated Internet address space. Internet address space is a globally managed resource, administered by the Internet registry system for and on behalf of the Internet community as a whole. The Asia Pacific Network Information Centre (APNIC) is the regional body that allocates IP addresses for the South Pacific area, including New Zealand. APNIC is one of 3 Regional Internet Registries, which operate under the auspices of the Internet Assigned Numbers Authority (IANA), providing allocation and registration services that support the operation of the Internet globally. APNIC provide addresses to International ISP's such as Telecom, Telstra, IBM, The Internet Group and Clearnet, for sub-allocation to ISPs or customers around the country. Each downstream ISP can then assign the addresses to their end-user customers. APNIC also allocate directly to multi-homed ISPs or companies requiring large amounts of IP address space, such as /19 (32 Class C's) or larger. Address space is allocated to meet documented requirements and when the address space is no longer required, the address space should be returned to the allocating organisation. As such, historical and current Internet registry policy does not recognise the concept of address "ownership" or the buying and selling of address space. All IP address allocations are registered with APNIC and the end-user details on the APNIC database must be updated regularly. There is a responsibility on the International ISP's to ensure this occurs, as it is an important part of the procedure to maintain efficiency in allocations and to obtain additional address space. On behalf of the Internet community within New Zealand, we are asking for your help to allow us to aggregate overseas Internet advertisements as much as possible. If you have addresses from a previous supplier, and now use a different International ISP, it is in your own interest as well as best Internet practises, to return those addresses to the previous supplier. These addresses will be re-distributed to other customers, whilst your current International ISP will provide new IP addresses for your network. It must be stated that this is entirely voluntary, and if individual companies choose not to renumber at this time, for any particular reason, it is entirely their choice. However, it should also be stated that it is estimated that connectivity may be less reliable in the future and extended outages may become more frequent unless your company's addresses are being advertised in aggregatable or large blocks. Reasons for this forecast are detailed in the following Q&A section below. This letter is intended to start an education process on the issues surrounding IP address advertisement on the Internet. It is in every user's "best interest" to keep routing tables as simple as possible by advertising international routes efficiently. To do this, every administrator of registered IP address space has the responsibility to act in the best interests of Internet users, and respect the global issues of route advertisements and portability of IP addresses. I have attached some questions and answers that may help you to understand the background and necessity for the changes. If you have any further questions you should contact your ISP or upstream provider. Additional supporting information can be found at http://www.your-website.yyy.nz Yours sincerely YYY Title Organisation Contact phone number Questions Question: What are the issues? IP addresses, allocated by APNIC to each International ISP, need to be advertised from that particular supplier's gateway, allowing large blocks of addresses to be advertised to the Internet with maximum routing efficiency. This process is called supernetting or route aggregation using Classless Inter-Domain Routing (CIDR). Documentation on the need for route aggregation can be found at: http://search.ietf.org/internet-drafts/draft-ietf-idr-aggregation-tuto rial-01.txt. International Internet routing can be very complex, leading to large routing tables and router limitations being stretched. Many customers are trying to move the addresses they are using to different gateways, breaking down the maximum block size and causing routing tables to increase in size. The problem is Global in scope and is not just in New Zealand. One way to provide "Internet friendly" advertisements is for provider dependent IP addressing. This means non-portable IP addresses between International ISP's, and is the current APNIC policy for address assignments within NZ. Problems are foreseen due to memory limitations and CPU performance on current backbone routers that are stretched because of the sheer number of routes required to advertise the large number of networks. If customer XXX moves from International ISP A to International ISP B, and continues to use the same IP address range, Int.ISP A must now advertise two smaller blocks, as well as advertising the larger block (supernet), increasing the table size. The route table of Int.ISP B also increases with the advertisement of the new range. Overseas supplier's routers then need to handle both increases (increased advertisements from A and B) on their route table. As additional customers move to and from suppliers, the effect increases, until memory limits on individual routers are reached. When limits are reached on individual routers, filtering can be implemented to ensure the more specific, longer prefix, (or smaller) routes can be dropped to enable the router to carry on operating. Also, when networks have connectivity problems, the overseas supplier can configure dampening to occur. This shuts off access for that network for extended periods, and is typically much longer for small networks than for larger networks. Documentation on route-flap dampening parameters can be found at: http://www.ripe.net/docs/ripe-178.html It is estimated that the frequency and impact of dampening and filtering by overseas suppliers will increase over the next few years to the point where un-aggregated address space cannot be guaranteed to have reliable connectivity or be routed internationally. Question: If nothing is done, what is likely to happen? If present trends continue we may not be able to obtain more IP address space for distribution within New Zealand, and we may be unable to route non-contiguous Class C networks internationally. This will negatively impact service for all customers using Provider Independent (PI) address space which are small and not aggregatable. Documentation on the comparison between Provider Independent (PI) and Provider Aggregatable (PA) address space can be found at: http://www.ripe.net/docs/ripe-127.html Question: What can we do about it? The only way to minimise New Zealand routes negatively impacting on the Internet in the future is to advertise New Zealand routes in contiguous blocks (supernets). The larger the blocks the better. Because routes emanating from New Zealand are currently fragmented between International ISP's, the routes must be consolidated (aggregated) into contiguous blocks. To achieve this, we need to work together to convert current network address schemes into PA address space. Each IP address allocation and assignment must be provided as non-portable, and existing IP address assignments should be renumbered into the aggregated blocks. The Internet is a self regulated organism and as such is driven entirely by it's end-users. To ensure reliable connectivity in the future for all users, some changes may have to take place from time to time as the Internet develops and matures. Some of these changes may be harder for certain user's than for others to implement, but we would ask for your support in doing what will benefit the vast majority of users. Question: Does this affect me? This appeal may affect you if your network uses IP address space supplied by someone other than your current International ISP, and will affect all New Zealand organisations by the ongoing allocation of IP addresses. We would request that all IP addresses from previous International ISP's should be returned to that supplier, or directly to APNIC. Your current supplier will work with you to supply you with the equivalent address space (in a contiguous block). Your company may have to look at renumbering their network. Renumbering has no effect on Domain Names or Email addresses other than behind the scenes configuration, so business cards and stationery should not be affected. Documentation covering the need to renumber can be found at: http://sunsite.hr/cgi-bin/rfc/rfc1900.txt and http://sunsite.hr/cgi-bin/rfc/rfc2008.txt Question: What are my options if my company has to renumber? There are many options available, but some may not be viable for your companies requirements. We hope you will spend some time researching the pro's and con's of each option, and act in the best interests of New Zealand Internet users, and in the spirit of global Internet best practises. The various options include: 1. Implement a firewall for your company. This means you can keep the numbering scheme you are using and not have to renumber. All access to the network can be through a firewall, for enhanced security, and you will only need a handful (at the most) of new registered IP addresses. The old registered IP addresses will be able to be returned to the original supplier. The network will effectively be on a private numbering scheme, interfacing with the Internet registered addressing scheme by means of a network address translation (NAT) mechanism. The benefit of this method is independence from supplier's numbers (apart from the external firewall addresses) which means swapping suppliers in the future will not impact you nearly as much. NAT technology is improving all the time and allowing more flexibility than in earlier versions. 2. Apply NAT functionality or Web-proxy functionality without a firewall. This gives you Internet access without having to renumber your existing network. You may want to review your network security. 3. If you use dynamic IP allocation techniques such as DHCP for your network, the amount of work required to renumber is greatly reduced. Reconfiguring your DHCP server and rebooting network devices will renumber your devices automatically. You may still require several new static IP addresses for devices which support DHCP technology i.e. for devices such as nameservers on production networks you may still require several new static IP addresses. 4. Unfortunately, if you have static IP addressing throughout your network, and your network does not easily support either NAT or DHCP reconfiguration, you may have to manually renumber your network. 5. If your company is using large amounts of IP address space, such as /19 (32 Class Cs) or larger, you can approach APNIC directly, requesting your own provider independent IP address block. Question: Who is driving the changes? * International Internet numbering authorities such as IANA, APNIC, RIPE and ARIN recommend "Best Internet Practises" be maintained by all suppliers of Internet services. * Within New Zealand, International ISP's such as Telecom, Telstra, Clear, The Internet Group, and IBM are supporting the initiative, along with national ISP's, all of whom sub-allocate IP addresses under APNIC policy. * Internet user's world-wide benefit by New Zealand successfully implementing these changes. There does need to be a combined and rational approach to the problem, so International ISP's, national ISP's and end-users will need to work closely and communicate effectively to co-ordinate the changes as they take place. Question: Whom can I contact to get more information? Your ISP or upstream Internet Service Provider should be able to help with any questions regarding renumbering. Your International ISP will also be able to help you by supplying new contiguous IP address blocks. Additional supporting information can be found at http://www.netgate.net.nz, which has references to the latest APNIC RFC's and policy documentation regarding IP address allocations (such as RFC 2050). Contact can also be made directly with APNIC at http://www.apnic.net for IP address allocation request forms and further information. --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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RE: Appeal to end-users regarding IP address aggregation - Docume nt posting comments
by Warwick GLENDENNING 09 Dec '98

09 Dec '98

Hi As a user of this list I am getting tired of these remarks about the posting of documents in certain formats. If you have a problem with a message that has been posted please direct it to the person concerned, NOT the list so the author can fix it instead of lambasting the author on this list, otherwise your comments serve no useful purpose. Thanks Warwick Glendenning Network Manager - University of Waikato -----Original Message----- From: Andy Linton [mailto:asjl(a)netlink.net.nz] Sent: Wednesday, 9 December 1998 04:29 To: Brett Telfer Cc: nznog(a)list.waikato.ac.nz Subject: Re: Appeal to end-users regarding IP address aggregation Brett Telfer wrote: > > Hi all, > > Following on from the meeting at Cisco on the 27th Nov, I have attached > an updated letter which includes suggested input from APNIC. > > This document (or at least the information it contains) can hopefully be > distributed around all end-users as the start of an educational > programme aimed at raising peoples awareness of current IP addressing > issues. > > I have tried to make it as "neutral" as possible, but there may be pieces of > "Telecom centric nature" that slipped past, so if anyone has issues with > these please delete, cut and paste, bastardise etc as necessary. > Apologies also for any inaccuracies that may be present. > Brett, It looks like stuff of a 'Microsoft centric nature' has slipped past. Please can we have this is a non proprietary format? andy -- Mailto:Andy.Linton(a)netlink.net.nz Tel: +64 4 494 6162 Post: Netlink, PO Box 5358, Lambton Quay, Wellington, New Zealand -- --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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RE: Appeal to end-users regarding IP address aggregation - Docume nt posting comments
by Warwick GLENDENNING 09 Dec '98

09 Dec '98

I will second that Warwick -----Original Message----- From: Joe Abley [mailto:jabley(a)clear.co.nz] Sent: Thursday, 10 December 1998 09:48 To: Dean Pemberton; Andy Linton; nznog(a)list.waikato.ac.nz Cc: jabley(a)clear.co.nz Subject: Re: Appeal to end-users regarding IP address aggregation - Document posting comments On Thu, Dec 10, 1998 at 07:29:14AM +1100, Dean Pemberton wrote: > On Wed, Dec 09, 1998 at 07:13:56AM +0000, Andy Linton wrote: > > I'm happy to leave this alone IFF we all agree that we desist from > > posting Word etc docs. > > I move that we make this an addition (suitable worded) to the charter of the > NZNOG list. How about: + Postings to the list should be in ASCII or MIME encoded as text/plain. No attachments of any kind should be sent to the list. If it is required to present a document, a suitable URL for the document may be referred to. For documents that are of general interest, proprietary file formats are discouraged. and also + Breaches in list etiquette (e.g. including attachments) should be dealt with privately with the offending list user, and should not involve complaints being sent to the list. > Anyone second that? Me too :) --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog

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