From: Don Stokes

No. The /20 supernet continues to be advertised, and the new /24 net is also advertised. Since the /24 advertisement is more specific, traffic is routed to it; if it's not inside the /24 but inside the /20, the less specific route is used.

Holes are all well and good, but they create greater administration nightmares. For example at Waikato, holes in 202.36.0.0/16 have created nightmare access lists and administration overhead (not to mention CPU overhead) to prevent end user traffic from re-using NetGates international capacity when a 202.36.x.x/24 network for some reason disappears from the advertisers backbone the traffic defaults back to NetGate due to the /16. It is obvisouly a much greater problem at Waikato due to the open nature of the exchange, but I am sure that as network complexity continues to ... complex:) this will cause problems for other providers. -Rowan --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog