On Tue, 20 Mar 2007 01:47:27 +0000 "Bruce M. Simpson" <[EMAIL PROTECTED]> wrote:
> I believe PMTU measurements may only be relied upon for active TCP > connections, but it's been a while since I read this code. I think, according to RFC1191, that the probing should happen on any given connection after 10 minutes. Otherwise, a single ICMP message could permanently reduce the MTU of a connection for good. I believe that FreeBSD and others did it that way 10 years ago, when I did a survey of available PMTUD implementations. I wonder if all applicable TCP connections ought to be notified when the hostcache MTU is updated and when a hostcache entry with an MTU set is deleted? (For that matter, can an entry ever be deleted while outstanding connections are going to that host?) Kevin [EMAIL PROTECTED] _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
