Kernel is Red Hat 2.4.21-20.1.2024.2.1.nptlsmp from the Severn beta.
Triggered as follows:
Configure 6to4 IPv6 address 2002:X:Y::1 on the ISDN dialup.
Enable IPv6 forwarding on all interfaces
Configure radvd to advertise 2002:X:Y:1234::/64 on internal eth0 device
Observe radvd doesn't add any routes for the 2002:X:Y:1234::/64 subnet.
Bring up an internal machine on eth0.
Observe it receive an IPv6 address of the form 2002:X:Y:1234:.....
Attempt to ping6 a machine in the outside world from the internal host.
Observe that reply packets from the outside world to the internal
address are routed straight back _out_ the 6to4 tunnel again, in the
absence of sane routes -- with associated bitching...
redirect: no link_local addr for dev
Dead loop on virtual device tun6to4, fix it urgently!
Attempt to ping6 the router 2002:X:Y::1 from internal host.
Observe panic: http://www.linux.org.uk/~dwmw2/dcp_1575.jpg
Should initscripts set up an unreachable route for 2002:X:Y::/48 when
setting up a 6to4 tunnel? Should radvd set up routes to subnets of that
network when advertising them internally according to its configuration?
Certainly the kernel should do something other than panicking :)
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dwmw2
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