>I subsequently tried between a dual stack router and a host, but that
>didn't work. What IPv6-address should i take for the tunnel of the
>router?(it's got 3 2001::/16 addresses)
>Apr 15 14:35:28 abraham /kernel: gif_output: recursively called too many times(2)
what is your topology during the experiment?
my guess is that your packet is trying to go through gif interface
twice during output path on a same machine, like:
- first, IPv4 packet tries to go out of gif and encapsulated
into IPv6 packet (IPv4 payload -> IPv6 IPv4 payload)
- second, the IPv6 packet tries to go out of (another) gif and
encapsulated into IPv4 packet
(IPv6 IPv4 payload -> IPv4 IPv6 IPv4 payload)
to prevent kernel stack overflows KAME (= FreeBSD) code monitors how
many times the packet have traversed gif interface, and forbids output
if it exceeds max_gif_nesting (sys/net/if_gif.c). if you want to, you
may try increasing the parameter - but if you increase it too much,
kernel can panic if you create certain routing table setup.
itojun
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