Re: gif problems in -STABLE

Sean C. Farley wrote:
I just updated one of my machines from RELENG_6 as of 2006-11-03, to
RELENG_6 as of 2006-12-29. This caused the IPv6 tunnel which this box
uses, which had been doing fine for months, to suddenly stop working.
...
For some reason, the ifconfig command now fails to create the proper
routing table entries. With the 2006-11-03 kernel, if I configure my
gif0 tunnel as follows:

I can confirm my setup with Hurricane Electric also started failing at
some point:
...
I needed to add the following to restore the old (working) behavior:
ipv6_static_routes="defroute"
ipv6_route_defroute="AAAA:BBBB:CCCC:DDDD::1C -interface gif0"

By doing some nice bisection debugging, I've narrowed the problem down
to this specific commit:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet6/nd6.c#rev1.48.2.16

If you revert this change, tunnel configuration will work as before
again. I'm now investigating the diff itself, to see if I can find an
error in there anywhere... :)

Cheers,
Dimitry
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