From: Patrick McHardy <kaber@trash.net>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: Netfilter Development Mailinglist <netfilter-devel@lists.netfilter.org>
Subject: Re: Bridge netfilter MTU discovery
Date: Thu, 08 Jun 2006 09:17:57 +0200 [thread overview]
Message-ID: <4487CF25.5020407@trash.net> (raw)
In-Reply-To: <20060602111511.7d08f33c@localhost.localdomain>
Stephen Hemminger wrote:
> Is there an easy way to force bridge packets to cause an ICMP frag needed
> if the MTU of the destination is too small. Normal bridging will just drop
> the packet, but a rule to send ICMP would allow PMTU to work. Maybe even
> having a module to fragment would be good.
Conntrack breaks PMTU discovery by always defragmenting/refragmenting
packets, regardless of IP_DF. But there is no way to generate ICMP
frag required messages using iptables.
prev parent reply other threads:[~2006-06-08 7:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-02 18:15 Bridge netfilter MTU discovery Stephen Hemminger
2006-06-08 7:17 ` Patrick McHardy [this message]
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