2002::/16 [6to4] & abuse

David Hubbard dhubbard at dino.hostasaurus.com
Wed Sep 24 16:42:15 UTC 2014

Curious if anyone can tell me, or point me to a link, on how 2002::/16
is actually implemented for 6to4?  Strictly for curiosity.

We had a customer ask about blocking spam from their wordpress blog that
we host and the spammer was using 2002:af2c:785::af2c:785, which was the
first time I'd seen wordpress spam coming from IPv6.  Per RFC3964, I'm
guessing the is just a relay router, not surprisingly, on
the China Net network and the spammer was native v6?

I see that net advertised from 6939 (HE) and 1103 (SURFnet Netherlands)
from the perspective of my feeds, so that just got me more confused.



More information about the NANOG mailing list