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BCP38 exceptions for RFC1918 space
- Subject: BCP38 exceptions for RFC1918 space
- From: fw at deneb.enyo.de (Florian Weimer)
- Date: Sun, 15 Aug 2010 19:02:50 +0200
- In-reply-to: <69096.1281891438@localhost> (Valdis Kletnieks's message of "Sun, 15 Aug 2010 12:57:18 -0400")
- References: <[email protected]> <67328.1281889598@localhost> <[email protected]> <69096.1281891438@localhost>
* 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?