Single LAN port inexplicably changes RSA host key...
I am running several servers with multiple LAN ports.
Two of the machines can communicate via two separate subnets to control bandwidth issues.
Machine 1: 10.0.0.1 (w/ additional alias 22.214.171.124)
Machine 2: 10.0.0.2
I see three separate intermittent symptoms on the 10.0.0.0 network.
1) Both machines will cut off in the middle of the data transfer (rsync) if it takes too long.
2) Both machines will claim that the RSA key host has changed on the other...this will happen every few minutes.
3) Both machines will, at times, disallow login from the other...ssh prompts for password but will not accept the password.
Performing any operation between the same machines via the 192.168.1.0 subnet has no issue (as of yet).
From what I can see, the routing tables are set correctly. Machines were exact clones of each other. Machine 2 is a recently rebuilt machine with a fresh suse11 distro install. Symptoms on Machine 2 appeared immediately. I had this exact setup but reversed ip addresses before Machine 2 burned out without issue. All networks but the 126.96.36.199 are internal and there hasn't been any indication of attack.
At times, running ssh-keygen -R <ipaddress> will fix issues 1-3, other times only 1-2.
Thanks for any help,
Last edited by pjd83; 02-20-2010 at 08:29 AM.