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 From:  Manuel Kasper <mk at neon1 dot net>
 To:  =?iso-8859-1?Q?St=E5le_Johnsen?= <stale dot johnsen at smartit dot no>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] MTU problems
 Date:  Wed, 23 Dec 2009 10:56:02 +0100
> Tue Dec 22 10:10:39 2009 us=93000 NOTE: This connection is unable to accomodate a UDP packet size
of 1541. Consider using --fragment or --mssfix options as a workaround. 

Looks like your OpenVPN connection is relying on fragmented IP packets - otherwise you wouldn't be
able to get a UDP packet with a total length (including IP header) of > 1500 bytes across the
Internet. Have you enabled the "Allow fragmented packets" option on your firewall rules?

- Manuel