Subject: Re: PMTUD blackhole detection
To: Darren Reed <email@example.com>
From: None <firstname.lastname@example.org>
Date: 05/01/2001 18:42:51
>>> on PR 12790, I posted a simple patch for TCP PMTUD blackhole detection.
>>> if there's no ack for a while, the patch will do the following:
>>What if there is no ACK, but ICMP unreachable errors that are not
>>"need fragmentation" - will they reset the timer (I think they should) ?
> i did not change that part of the codepath. icmp unreachables will
> be counted, and if the count reaches maximum, the connection will
> be terminated.
"that part of the codepath" = TCP/IP illustrated vol 2, page 904 (27.6
tcp_ctlinput) and page 905 (27.7 tcp_notify).