Re: ICMP fragmentation required but DF set problems.

[Mark.Andrews () NOMINUM COM]

> IPv6 is another case though.  Here you have mandatory PMTU for all
> protocols.

        This is a myth.  It is quite possible to have a IPv6
        implementation that does not require PMTU discovery.  You
        just fragment all your traffic at the network MTU.  If fact
        there are hooks in the BSD advansed API to allow you to do
        this on a per socket basis.

        DNS servers, for one, need to be able to disable PMTU on
        the replies.

        Mark

> Niels.
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Mark Andrews, Nominum Inc.
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