https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220351
Eugene Grosbein <eu...@freebsd.org> changed:
What |Removed |Added
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Assignee|freebsd-net@FreeBSD.org |eu...@freebsd.org
Status|New |Open
CC| |eu...@freebsd.org
--- Comment #2 from Eugene Grosbein <eu...@freebsd.org> ---
(In reply to Martin Birgmeier from comment #1)
Lowering interface MTU of internal machine also lowers its default route 'mtu'
attribute, see output of the command 'route -n get default'.
Raising interface MTU back does NOT restore 'mtu' attribute of the default
route, so the kernel still uses 1492 as maximum IP packet size for packets
going via this route.
Correct solution for your problem is 'set iface enable tcpmssfix' command in
the mpd.conf, see /usr/local/etc/mpd5/mpd.conf.sample for example. This way you
can keep default MTU=1500 for internal hosts and have no MTU-related network
problems.
Please test and report back.
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