I was running 11.10 and decided to do the full upgrade and come up to 12.04 after the update SSH (not SSHD) is now misbehaving when attempting to connect to other OpenSSH instances. I say OpenSSH as I am running a DropBear sshd on my router and I am able to connect to it.
When attempting to connect to an OpenSSH server
risk@skynet:~/.ssh$ ssh -vvv risk@someserver
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /home/risk/.ssh/config
debug3: key names ok: [
[email protected],
[email protected],
[email protected],
[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss]
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to someserver [someserver] port 22.
debug1: Connection established.
debug1: identity
file /home/risk/.ssh/id_rsa type -1
debug1: identity
file /home/risk/.ssh/id_rsa-cert type -1
debug1: identity
file /home/risk/.ssh/id_dsa type -1
debug1: identity
file /home/risk/.ssh/id_dsa-cert type -1
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/risk/.ssh/id_ecdsa" as a RSA1 public key
debug1: identity
file /home/risk/.ssh/id_ecdsa type 3
debug1: Checking blacklist
file /usr/share/ssh/blacklist.ECDSA-521
debug1: Checking blacklist
file /etc/ssh/blacklist.ECDSA-521
debug1: identity
file /home/risk/.ssh/id_ecdsa-cert type -1
ssh_exchange_identification: read: Connection reset by peer
risk@skynet:~/.ssh$
DropBear instance
risk@skynet:~/.ssh$ ssh -vvv root@darkness
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /home/risk/.ssh/config
debug3: key names ok: [
[email protected],
[email protected],
[email protected],
[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss]
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to darkness [192.168.1.1] port 22.
debug1: Connection established.
debug1: identity
file /home/risk/.ssh/id_rsa type -1
debug1: identity
file /home/risk/.ssh/id_rsa-cert type -1
debug1: identity
file /home/risk/.ssh/id_dsa type -1
debug1: identity
file /home/risk/.ssh/id_dsa-cert type -1
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/risk/.ssh/id_ecdsa" as a RSA1 public key
debug1: identity
file /home/risk/.ssh/id_ecdsa type 3
debug1: Checking blacklist
file /usr/share/ssh/blacklist.ECDSA-521
debug1: Checking blacklist
file /etc/ssh/blacklist.ECDSA-521
debug1: identity
file /home/risk/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version dropbear_0.52
debug1: no match: dropbear_0.52
...
I have googled and ran most ALL fixes recommend both from the Debian and Arch sides and none of them seem to resolve my issue. Any ideas?