network unrachable problem

[Tony van der Hoff <tony@vanderhoff.org>]

I have a (headless) SBC (actually a raspberry pi, but I think that's
unimportant) running wheezy, with both wireless and wired networking
interfaces, each with ipv4 and ipv6 addresses.

When both are configured, all is well, and I can ping anywhere with both
address families. If I now unplug the eth0 cable, one of the address
families dies on the wireless side, but only beyond the router; i.e. I
can ping and ping6 to the router, but can only ether ping or ping6 to
google.com. The failing family responds with "network unreachable".

If I now do "ifconfig eth0 down" my wan once again works correctly. I
guess udev should be bringing down the eth0 automatically, but is not
doing so.

Any suggestions on how to fix this, please?

-- 
Tony van der Hoff        | mailto:tony@vanderhoff.org
Buckinghamshire, England |