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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: RFC 1918
In message <[email protected]>, "Gary E. Miller" writes: > >Yo Bennet! > >Sounds like circular reasoning: > >Path MTU discovery is broken beacuse poeple use RFC1918 addresses in routers. > >Since Path MTU discovery is broken then there is no need to follow RFC1918. No -- 1918 addresses would only break PMTU if folks did ingress or egress filtering for 1918 addresses. A much bigger cause of the breakage firewalls that block the ICMP message. And most people don't notice or care, because there's been so little need for PMTU in recent years. But that will change, as assorted tunneling technologies become more popular. --Steve Bellovin
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