I was wondering what people think about this latest story..
 
http://www.idg.net.nz/webhome.nsf/UNID/4AA2988B4A1835C5CC256BFF0014A6A8!opendocument
 
(a more technical expanation from Cisco of the problem http://www.cisco.com/warp/public/105/56.html)
 
I've noticed this problem for ages (for example the ASB's site) when viewing their pages via a GRE tunnel (or the inability to).
 
Is blocking _all_ ICMP types the wrong thing to do? (in paticular type 3 (unreacable), subtype 4(needs fragmentation) for PMTU Discovery) and basiclly breaking their website for people who have paths who get fragmented TCP/IP Packets)
 
 
Thanks
Craig Whitmore