From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: PROBLEM: System call 'sendmsg' of process ospfd (quagga) causes
 kernel oops
Date: Wed, 19 Oct 2011 09:52:19 +0200
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To: David Miller <davem@davemloft.net>
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Le mercredi 19 octobre 2011 =C3=A0 03:30 -0400, David Miller a =C3=A9cr=
it :
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Wed, 19 Oct 2011 09:18:33 +0200
>=20
> > Seems fine (Maybe do the +15 in caller site ?), but we also have ot=
her
> > problematic cases, using alloc_skb() only...
>=20
> Ok, which ones operate over these problematic GRE tunnels?
>=20

I was more thinking of general idea to allow any device to change its
needed headroom.

=46or GRE tunnels, I dont think IPv6 fragmentation could be relevant,
but maybe IGMP could trigger a problem ?