Processing IPv6 Router Advertisements

Fernando Gont fernando at gont.com.ar
Tue Jan 19 12:14:55 UTC 2010


Hello, folks,

I'm running FreeBSD 6.2-Release in one of my boxes, and there seems to
be a bug in the processing of Router Advertisement messages.

RA messages seem to be required to have a Source Address in the
fe80::/32 prefix, rather than in the fe80::/10 prefix. That is, the
first 32 bits of the IPv6 Source address must be fe80:0000, or else the
message is dropped (at least, no changes are made to the destination
cache or the neighbor cache).

Can anybody confirm this one, or correct me if I am wrong?

Thanks!

Kind regards,
-- 
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at acm.org
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1






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