Summary

ISPs' responses to CISCO vulnerability(CA-2003-015)
Filter based on protocol number at EBGP routers - PIM, mobile-ip4

As a short-term workaround (while upgrading CISCO) it is okay
IAB noted that multiple ISPs plan to leave the filter configured forever

Filters at EBGP router does not really solve the problem
Attackers could be your customer
It is a threat to the Internet itself
To the extensibility/adaptability of the Internet

So, please upgrade CISCO and remove filters at EBGP routers

Comments to: iab@ietf.org