On Tue, Jan 06, 2004 at 09:01:47PM +1300, Andrew Tarr wrote:

> I'm getting a lot of " <IP address> sent an invalid ICMP 11, code 0
> error to a broadcast <broadcast address>" messages on the console
> these days. 

> The IP address is our Netgear ADSL router thingy. 

Look at the source of the message--linux/net/ipv4/icmp.c:

        /*
         *      Check the other end isnt violating RFC 1122. Some
         *      routers send bogus responses to broadcast frames. If you
         *      see this message first check your netmask matches at
         *      both ends, if it does then get the other vendor to fix
         *      their kit.
         */

> I don't know when it started, maybe a kernel upgrade. I've been
> (probably unwisely) ignoring them as I tend to use X, but I'm just
> trying to build a fileserver which I'm not going to put X on (if I can
> help it), and it's a little more noticable (and annoying) there. 

You can tell the kernel to ignore the messages by setting
/proc/sys/net/ipv4/icmp_ignore_bogus_error_responses to 1.

Cheers,
-mjg
-- 
Matthew Gregan                     |/
                                  /|                [EMAIL PROTECTED]

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