[69983] in North American Network Operators' Group

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Re: Alternate and/or hidden infrastructure addresses (BGP/TCP RST/SYN

daemon@ATHENA.MIT.EDU (Pekka Savola)
Fri Apr 23 04:07:59 2004

Date: Fri, 23 Apr 2004 11:07:05 +0300 (EEST)
From: Pekka Savola <pekkas@netcore.fi>
To: "Patrick W.Gilmore" <patrick@ianai.net>
Cc: nanog@merit.edu
In-Reply-To: <D4496ABC-94B4-11D8-83B0-000A9578BB58@ianai.net>
Errors-To: owner-nanog-outgoing@merit.edu


On Thu, 22 Apr 2004, Patrick W.Gilmore wrote:
> Hrmmm, would the GTSM work with loopback peering?  ISTR it allowed a 
> TTL of 254, which should make it to the loopback interface.

Only flawed implementations have to use TTL of 254 when you have a 
session between two adjacent loopbacks.  But I think those still 
exist...

(TTL should only be decremented when _forwarding_, and I don't think
you could argue that you need to _forward_ a packet from your ingress
interface to your _loopback_ interface..)

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings


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