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openssh-4.3p2: setsockopt() problem

from [Kenneth Berland] Network Security [Permanent Link]
Subject: openssh-4.3p2: setsockopt() problem
Date: Sat, 9 Sep 2006 02:14:35 -0700 (PDT) 
List,

I'm behind a dlink DSL-G604T wireless router.  ssh client was hanging at:

debug1: Entering interactive session.

Telnet was having a similar problem to port 22, however a simple client.c
I compiled was not.  My java ssh client was also working. After some
investigation, I noticed that the hang was after the system call:

setsockopt(3, SOL_IP, IP_TOS, [16], 4)  = 0

I noticed also that telnet was hanging the same way.  I commented all the
setsockopt() calls out of the ssh client code (because I was in a hurry)
and now it works.  Anyway, I figured I should document the problem
somewhere.

-Ken
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