* Valdis Kletnieks:
On Sun, 15 Aug 2010 18:46:49 +0200, Florian Weimer said:
And that connection that's trying to use PMTU got established across the commodity internet, how, exactly? ;)
ICMP "fragmentation needed, but DF set" messages carry the a addresses of intermediate routers which generate them (potentially in response to MTU drops) as source addresses, not the IP addresses of the peers in a connection.
If any long-haul carriers are originating ICMP packets for other people's consumption from 1918 addresses rather than addresses in their address space, it's time to name-n-shame so the rest of us can vote with our feet and checkbooks. There's no excuse for that in this day and age.
What does "originating" mean? Creating the packets? Or forwarding them?