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Date:	Sat, 14 Jul 2007 15:09:08 -0700
From:	Andrew Morton <>
To:	"" 
Subject: Re: [Bugme-new] [Bug 8754] New: Kernel addrconf modifies MTU of
 non-kernel routes

On Sat, 14 Jul 2007 14:54:32 -0700 (PDT) wrote:

>            Summary: Kernel addrconf modifies MTU of non-kernel routes
>            Product: Networking
>            Version: 2.5
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: IPV6
>         AssignedTo:
>         ReportedBy:
> I have an MTU of 16110 set on eth0 on a network where the MTU is 1500 as set by
> RAs. One of the other hosts on the network has an MRU/MTU of 7200 so I have a
> specific route to it with this MTU.
> If I add the route early (i.e. on startup) before address autoconfiguration
> takes place, when the first RA is received the kernel changes the MTU on my
> route - this should not happen.
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