I don´t know about use 2 dns, but one dns requistion has timeout to 5000ms.
Do you test this use the dig or nslookup.
==== [renato@thedark ~]$ dig -x 127.0.0.1
; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> -x 127.0.0.1 ;; global options: printcmd ....
;; Query time: 14 msec
... ====
The dig showed the time of the query.
[]s ________________________________________________ Renato de Oliveira Diogo
Bacharel em Ciência da Computação UNESP - Bauru
LPIC1 - Linux Professional Institute Certification - Nível 1
renato.diogo@gmail.com renato.diogo@yahoo.com.br
2009/3/31 Les Mikesell lesmikesell@gmail.com:
Ryan J M wrote:
The waiting time is about 50s on my CentOS box now. "yum remove openssh* "and "yum install openssh*" can't make it right. "mv ~/.ssh{,.bak}" not works either. Here comes my tcpdump log, I am not an expert on SSH, Can anyone here get me out of this?
The answering sshd will do a reverse DNS lookup on the connecting IP address. That's about the right time to wait for timeouts from 2 DNS servers if they don't respond.
-- Les Mikesell lesmikesell@gmail.com
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