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Date:	Thu, 5 Apr 2007 22:12:56 +1000
From:	Herbert Xu <>
To:	Patrick McHardy <>
Cc:	Linux Netdev List <>
Subject: Re: IPsec PMTUD problem

On Thu, Apr 05, 2007 at 02:09:20PM +0200, Patrick McHardy wrote:
> > One possible solution is to not send MTU errors to ourselves since
> > we it wouldn't give us any new information.  We'd need to audit the
> > users of icmp_send to make sure that there isn't a legitimate case
> > where we'd want to do that.
> One such case is delivery of errors to sockets. We'd need to make
> sure the errors are delivered some other way.

Alternatively we can still send the ICMP error but avoid a PMTU
update if we received it from ourselves.

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