Outdated bogon filtering seems pervasive..

james at towardex.com james at towardex.com
Fri Jun 2 21:33:27 CEST 2006


It seems reachability of new 26xx:: blocks seems to be quite low as opposed to
plain old 2001:: blocks.  Are many people still running on outdated bogon
filters?  I contacted some ASes that can't reach 2610:: block, and the ones
that have responded and working on a fix so far all have outdated bogon filters.

GRH prefix compare:

sorry for long url, if you prefer text output:

grh.sixxs.net> s b 2001:13f0::/32
BGP routing table entry for 2001:13f0::/32
Paths: (76 available, best #55, table Default-IP-Routing-Table)


grh.sixxs.net> s b 2610:78::/32
BGP routing table entry for 2610:78::/32
Paths: (46 available, best #36, table Default-IP-Routing-Table)

I don't know how many of you have blocks out of the new 26** or 2A** range, but
for those who do have, are you seeing similar reachability problems too?

Thank you,

More information about the ipv6-ops mailing list