[quagga-users 7597] Re: DF bit
paul at clubi.ie
Thu Sep 28 14:24:48 IST 2006
On Thu, 28 Sep 2006, ERCOLE NICOLA - technolabs wrote:
> is it possible to set the DF bit (Don't Fragment) of the IP header to 0
> in order to get the fragmentation.
> Which is the command to get that?
Some more context would be useful. Which protocol?
If OSPF: No, it's not possible really. *None* of the supported
systems will fragment raw sockets.
Most of the BSDish systems (inc. Solaris) also overwrite the DF and
IPID fields. So we can't do userspace fragmentation.
What's needed, ideally, is some sockopt to have OSes enable their
existing fragmentation support for raw sockets.
Paul Jakma paul at clubi.ie paul at jakma.org Key ID: 64A2FF6A
Don't worry -- the brontosaurus is slow, stupid, and placid.
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