[Gllug] Path MTU and multiple layers of NAT -- bad?

[Nix]

On Wed, 8 Feb 2006, Russell Howe uttered the following:
> On Wed, Feb 08, 2006 at 03:53:19PM +0000, Richard Jones wrote:
>> 
>> This turns out to be an obscure Xen bug ...  Nothing to do with either
>> pMTUd or NAT.
>> 
>> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=495
> 
> There's some stuff in the 2.6.15 changelog about bridging (or was it
> GRE...?) and checksums, IIRC. It might just be for devices which do
> hardware checksums. Might be worth a grep through changelogs?

It certainly doesn't affect all devices with bridges: I have one here
and it works fine both before and after the upgrade to 2.6.15.

There's an IPv6 length check fix in there, and a device add fix, and
a netfilter leak on hosts with multiple bridges on them (!), and
that seems to be pretty much it. Nothing that affects ordinary
unchanging single IPv4 bridges that I can see.

-- 
`... follow the bouncing internment camps.' --- Peter da Silva
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