[issue1869] openssh update key problems

[Alex Hornung]

A diff between the non-working verbose output and the working one: (root
user doesn't work, 'alex' user works, same machine). FWIW on the laptop
both root and 'alex' work just fine.

Pay special attention to the debug2: key: foo/id_rsa (*N*) and then
'Offering RSA public key' vs 'Trying private key'.


 debug1: Host 'leaf.dragonflybsd.org' is known and matches the RSA host key.
-debug1: Found key in /root/.ssh/known_hosts:2
-debug2: bits set: 495/1024
+debug1: Found key in /home/alex/.ssh/known_hosts:1
+debug2: bits set: 507/1024
 debug1: ssh_rsa_verify: signature correct
 debug2: kex_derive_keys
 debug2: set_newkeys: mode 1
@@ -99,8 +98,8 @@
 debug1: SSH2_MSG_SERVICE_REQUEST sent
 debug2: service_accept: ssh-userauth
 debug1: SSH2_MSG_SERVICE_ACCEPT received
-debug2: key: /root/.ssh/id_rsa (0x28400070)
-debug2: key: /root/.ssh/id_dsa (0x0)
+debug2: key: /home/alex/.ssh/id_rsa (0x0)
+debug2: key: /home/alex/.ssh/id_dsa (0x0)
 debug1: Authentications that can continue: publickey,keyboard-interactive
 debug3: start over, passed a different list publickey,keyboard-interactive
 debug3: preferred publickey,keyboard-interactive,password
@@ -108,21 +107,109 @@
 debug3: remaining preferred: keyboard-interactive,password
 debug3: authmethod_is_enabled publickey
 debug1: Next authentication method: publickey
-debug1: Offering RSA public key: /root/.ssh/id_rsa
-debug3: send_pubkey_test
+debug1: Trying private key: /home/alex/.ssh/id_rsa
+debug1: read PEM private key done: type RSA
+debug3: sign_and_send_pubkey: RSA
3b:83:6e:15:d1:89:cd:d3:9b:0a:eb:87:56:c5:ac:e1
 debug2: we sent a publickey packet, wait for reply