From owner-freebsd-questions@FreeBSD.ORG  Wed Feb 14 14:25:55 2007
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From: Josh Paetzel <josh@tcbug.org>
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Date: Wed, 14 Feb 2007 08:25:53 -0600
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Cc: sai <sonicsai@gmail.com>
Subject: Re: kernel: vr0: discard oversize frame
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On Wednesday 14 February 2007 06:23, sai wrote:
> On 2/14/07, Josh Paetzel <josh@tcbug.org> wrote:
> > I don't have any vr or rl cards, but see if you can increase the
> > MTU on them.  See the ifconfig manpage for details on how to do
> > so. Obviously you'd want to set it to at least 1532. :)
> >
> > --
> > Thanks,
> >
> > Josh Paetzel
>
> mtu is currently 1500.  "ifconfig vr0 mtu 1532" leaves the mtu
> unchanged, but  if I try to reduce it then  it does work,
> "ifconfig vr0 mtu 1498"  sets mtu to 1498.  Looks like that 1500 is
> the max that the vr driver/card will accept.
>
> sai

Probably your best bet at this point is to either get a card that will 
support a larger MTU (ala intel ethernet express), or contact your 
ISP and see if the MTU can be lowered on the modem (unlikely)

-- 
Thanks,

Josh Paetzel