Re: sent an invalid ICMP type 11, code 0 error to a broadcast: 0.0.0.0 on lo?

[Denis Vlasenko]

> The problem is, I can't see what is causing this misconfiguration
> or whatever.  I wasn't able to capture such a packet so far either --
> it never happened while tcpdump was running.

You may try to add printk("bad boy is: %s\n", current()->comm)),
or dump_stack(), or something like that in icmp path of IP stack.
(I am currently tracking an intermittent network problem
on my home box in similar way).

>  Note the local IP address mentioned is different, I've
> seen 3 so far, all 3 are local on this box and are on 3
> different (ethernet) interfaces (but the ICMP always comes
> from lo).

BTW what tcpdump actually shows?
--
vda

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