option 212 for 6RD

Daniel Roesen dr at cluenet.de
Fri Jan 18 14:32:57 CET 2013

On Fri, Jan 18, 2013 at 01:27:44PM +0100, Ole Troan wrote:
> that would result in hosts switching from one MTU to the other.

Indeed, and I've seen enough implementations resetting the interface
when changing MTU, resulting in session resets.

Envision your video streaming inside the LAN breaking up all the time
when you Internet DSL link is unstable.

Also you might break communication between statically configured systems
not listening to RAs (and thus assuming MTU=1500) with other devices
listening to the volatile MTU advertised by the CPE router. Suddenly
you can't print anymore because of MTU mismatches in your LAN. Fun!

Best regards,

CLUE-RIPE -- Jabber: dr at cluenet.de -- dr at IRCnet -- PGP: 0xA85C8AA0

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