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Re: cloned route gets wrong mtu
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: cloned route gets wrong mtu
- From: RedShift <redshift_(_at_)_pandora_(_dot_)_be>
- Date: Fri, 23 Dec 2005 12:51:50 +0100
Toni Mueller wrote:
I just stumbled across a problem where a directly connected host gets a
wrong MTU in his route entry in an OpenBSD 3.7 box.
openbsd .1 ---------- linux .2
The two hosts are connected via Fast Ethernet which has a nominal MTU
of 1500. The entry for the linux box in the OpenBSD's routing table
says that the MTU is only 1428. This wasn't always the case, but
occurred "suddenly" - without any known human interference. Manually
deleting the route returned operation back to normal (the routing entry
now shows a '-' in the MTU column).
If you have an idea about how and why such things happen, I'd very much
like to know.
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