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Geoff Huston wrote: > > "How would they enforce them?" > > Good question Joe, and one which I've also thought about without getting > to any sensible conclusion myself. > > Egress filter would ensure that traffic used source addresses consistent > with routing advertisements (RFC 2827) right? > > But surely this would also require that the routing system itself has some > level of trustable integrity. The issue in my mind is: how is the integrity > of the routing system managed? > >From the end user's viewpoint it appears things work because users complain when they go wrong. About 18 months ago we switched ISPs keeping our IP allocation, and some nine months after that the original ISP decided they still "had" our c class network. They allocated it to one of their new customers and updated the Optus routers (or whatever) and it took 2 days of their stuffing around before enough pressure was applied for them to actually look at the problem and fix it. If an ISP is in fact trusted with updating the routing system I guess we have to believe they are doing it correctly. Who else would know (or care) except the parties directly involved. Then again as it is such a fundamental component of the Internet problems do get fixed relatively quickly. -- Phil Crooker ORIX Australia 61 8 8443 6844 UNIX SysAdmin pcrooker@orix.com.au 61 8 8443 6955 (fax) * APNIC-TALK: General APNIC Discussion List * * To unsubscribe: send "unsubscribe" to apnic-talk-request@apnic.net *
