[Bug 883201] [NEW] Several second hang on ssh login

[Joel]

Public bug reported:

This problem is new since 11.04. It only occurs when connecting to a
server that I have not recently connected to. The problem still remains
after commenting out all lines in /etc/ssh_config.

To reproduce:

Check that DNS is operating correctly:

joel at joel-vm:~$ host testp1-db  # this is instant
testp1-db.mydomain.com has address 192.168.2.50
joel at joel-vm:~$ host 192.168.2.50 # this is instant
50.2.168.192.in-addr.arpa domain name pointer testp1-db.mydomain.com.

Connect to the server:

joel at joel-vm:~$ ssh -vvv root at testp1-db
OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e 6 Sep 2011
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0

<At this point, there is a hang of several seconds and then everything
follows normally>

debug1: Connecting to testp1-db [192.168.2.50] port 22.
debug1: Connection established.


Connecting to the server subsequently works at normal speed.

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/883201

Title:
  Several second hang on ssh login

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/883201/+subscriptions