Date: Tue, 13 Feb 2007 09:15:02 -0800 From: Eli Dart <dart@es.net> To: Stephen.Clark@seclark.us Cc: freebsd-net@freebsd.org Subject: Re: pmtud problem Message-ID: <45D1F216.1090708@es.net> In-Reply-To: <45D1E669.30402@seclark.us> References: <45D1E669.30402@seclark.us>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Stephen Clark wrote: > if the pc sends a packet of 1460 bytes with the DF bit set shouldn't the > freebsd 4.9 system > send back an icmp dest unreachable - fragmentation needed and DF bit set? Are you blocking icmp with a firewall filter? --eli > $ sysctl -a | grep mtu > net.inet.tcp.path_mtu_discovery: 1 > > Now if I change the mtu of the gre to 1412 everything works. > > Any insight would be appreciated. > > Thanks, > Steve - -- Eli Dart Office: (510) 486-5629 ESnet Network Engineering Group Fax: (510) 486-6712 Lawrence Berkeley National Laboratory PGP Key fingerprint = C970 F8D3 CFDD 8FFF 5486 343A 2D31 4478 5F82 B2B3 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD4DBQFF0fIWLTFEeF+CsrMRAig5AKDLp0PzYvaH93VZSfkiTMWorKCkBwCY6a78 qWtMMH4GdqHFac6frQjb7w== =06S0 -----END PGP SIGNATURE-----
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