On Wed, Feb 10, 2010 at 07:33:07PM +0100, Andrzej Adam Filip wrote: > Andrew Pollock wrote: > > On Wed, Feb 10, 2010 at 01:04:32PM +0100, Andrzej Filip wrote: > >> Package: dhcp3-client > >> Version: 3.1.3-2 > >> Severity: normal > >> > >> /sbin/dhclient-scipt uses interface-mtu option received from DHCP server > >> to set MTU of interface only if the MTU is bigger than 576. > >> > >> IMHO it should be > >> * changed (removed) > > > > See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513616 for the back > > story on why this behaviour was added in 3.1.2-1 > > > >> OR > >> * interface-mtu option 576 or lower should be used to set MTU of default > >> route > > > > Care to provide a patch with how this would be implemented? > > > >> Background: currently debian completly ignores inteface-mtu equal 576 > >> received from cable router (single crossover ethernet cable "network"). > > I will check later this week if the MTU is set by the provider itself or > needlessly by "a crazy router". Anyway the reasoning behind the patch > you have mentioned makes me think (as for now) that ignoring of too low > MTU should be configurable instead of being hard coded. > [ Very preliminary searches suggest "crazy route/ISP" in my case. ] > > I reserve right to change my opinion :-) I have some longer term plans to completely rewrite dhclient-script, and split out a lot of the functionality to the hooks. At this point the MTU sanitiser could be a hook, which could be disabled.
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