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[Bug 1316017] Re: openssh client ignores -o Tunnel=ethernet option, creating an IP tunnel device instead of an ethernet tap device

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Chiang Fong Lee <myself@xxxxxxxxx>
Date: Mon, 22 Jun 2015 07:29:01 -0000
Reply-to: Bug 1316017 <1316017@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
As I just noted on the upstream bug
(https://bugzilla.mindrot.org/show_bug.cgi?id=2365), the "-o
Tunnel=ethernet" option needs to be before the "-w" option. Then, the
tap device should be created as expected.

** Bug watch added: OpenSSH Portable Bugzilla #2365
   https://bugzilla.mindrot.org/show_bug.cgi?id=2365

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https://bugs.launchpad.net/bugs/1316017

Title:
  openssh client ignores -o Tunnel=ethernet option, creating an IP
  tunnel device instead of an ethernet tap device

Status in openssh package in Ubuntu:
  Confirmed

Bug description:
  This is a regression from the version of the client in 14.04 compared
  to 13.10. I'm connecting to 12.04.4 for a server.

  Expected behaviour:
  Creating a connection with the option "-o Tunnel=ethernet" will create a layer2 ethernet tap device.

  Actual behaviour:
  New client creates a  layer3 IP tunnel.

  The old version of the client that works properly (installed manually on 14.04):
  OpenSSH_6.2p2 Ubuntu-6ubuntu0.3, OpenSSL 1.0.1f 6 Jan 2014

  The new version of the client that does not work properly:
  OpenSSH_6.6p1 Ubuntu-2ubuntu1, OpenSSL 1.0.1f 6 Jan 2014

  The version of the SSH server I'm connecting to:
  openssh-server:
    Installed: 1:5.9p1-5ubuntu1.3
    Candidate: 1:5.9p1-5ubuntu1.3
    Version table:
   *** 1:5.9p1-5ubuntu1.3 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
          100 /var/lib/dpkg/status
       1:5.9p1-5ubuntu1 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages


  #####################################
  Terminal output with the old version:
  ssh -p 38613 <username>@<IP> -w any -o Tunnel=ethernet -vvv
  OpenSSH_6.2p2 Ubuntu-6ubuntu0.3, OpenSSL 1.0.1f 6 Jan 2014
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  debug1: auto-mux: Trying existing master
  debug1: Control socket "<path hidden>" does not exist
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to <IP> [<IP>] port 38613.
  debug1: Connection established.
  debug1: permanently_set_uid: 0/0
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/root/.ssh/id_rsa" as a RSA1 public key
  debug1: identity file /root/.ssh/id_rsa type 1
  debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-16384
  debug1: Checking blacklist file /etc/ssh/blacklist.RSA-16384
  debug1: identity file /root/.ssh/id_rsa-cert type -1
  debug1: identity file /root/.ssh/id_dsa type -1
  debug1: identity file /root/.ssh/id_dsa-cert type -1
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/root/.ssh/id_ecdsa" as a RSA1 public key
  debug1: identity file /root/.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 /root/.ssh/id_ecdsa-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.2p2 Ubuntu-6ubuntu0.3
  debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1.3
  debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1.3 pat OpenSSH_5*
  debug2: fd 3 setting O_NONBLOCK
  debug3: put_host_port: [<IP>]:38613
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa-cert-v01@xxxxxxxxxxx,ssh-dss-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v00@xxxxxxxxxxx,ssh-dss-cert-v00@xxxxxxxxxxx,ssh-rsa,ssh-dss
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: mac_setup: found hmac-md5
  debug1: kex: server->client aes128-ctr hmac-md5 none
  debug2: mac_setup: found hmac-md5
  debug1: kex: client->server aes128-ctr hmac-md5 none
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA <hex>
  debug3: put_host_port: [<IP>]:38613
  debug3: put_host_port: [<IP>]:38613
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug1: Host '[<IP>]:38613' is known and matches the ECDSA host key.
  debug1: Found key in /root/.ssh/known_hosts:24
  debug1: ssh_ecdsa_verify: signature correct
  debug2: kex_derive_keys
  debug2: set_newkeys: mode 1
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug2: set_newkeys: mode 0
  debug1: SSH2_MSG_NEWKEYS received
  debug1: Roaming not allowed by server
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug2: service_accept: ssh-userauth
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug2: key: /root/.ssh/id_rsa (0xhex),
  debug2: key: /root/.ssh/id_dsa ((nil)),
  debug2: key: /root/.ssh/id_ecdsa (0xhex),
  debug1: Authentications that can continue: publickey
  debug3: start over, passed a different list publickey
  debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
  debug3: authmethod_lookup publickey
  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
  debug2: we sent a publickey packet, wait for reply
  debug1: Authentications that can continue: publickey
  debug1: Trying private key: /root/.ssh/id_dsa
  debug3: no such identity: /root/.ssh/id_dsa: No such file or directory
  debug1: Offering ECDSA public key: /root/.ssh/id_ecdsa
  debug3: send_pubkey_test
  debug2: we sent a publickey packet, wait for reply
  debug1: Server accepts key: pkalg ecdsa-sha2-nistp521 blen 172
  debug2: input_userauth_pk_ok: fp <hex>
  debug3: sign_and_send_pubkey: ECDSA <hex>
  debug1: read PEM private key done: type ECDSA
  debug1: Authentication succeeded (publickey).
  Authenticated to <IP> ([<IP>]:38613).
  debug1: Requesting tun unit 2147483647 in mode 2
  debug1: sys_tun_open: tunnel mode 2 fd 4
  debug2: fd 4 setting O_NONBLOCK
  debug3: fd 4 is O_NONBLOCK
  debug1: channel 0: new [tun]
  debug1: setting up multiplex master socket
  debug3: muxserver_listen: temporary control path <hidden>
  debug2: fd 5 setting O_NONBLOCK
  debug3: fd 5 is O_NONBLOCK
  debug3: fd 5 is O_NONBLOCK
  debug1: channel 1: new [<hidden>]
  debug3: muxserver_listen: mux listener channel 1 fd 5
  debug1: channel 2: new [client-session]
  debug3: ssh_session2_open: channel_new: 2
  debug2: channel 2: send open
  debug1: Entering interactive session.
  debug2: channel 0: open confirm rwindow 2097152 rmax 32768
  debug2: callback start
  debug2: fd 3 setting TCP_NODELAY
  debug3: packet_set_tos: set IP_TOS 0x10
  debug2: client_session2_setup: id 2
  debug2: channel 2: request pty-req confirm 1
  debug1: Sending environment.
  debug3: Ignored env LANGUAGE
  debug3: Ignored env PATH
  debug1: Sending env LANG = en_US.UTF-8
  debug2: channel 2: request env confirm 0
  debug3: Ignored env DISPLAY
  debug3: Ignored env XAUTHORITY
  debug3: Ignored env TERM
  debug3: Ignored env HOME
  debug3: Ignored env TZ
  debug3: Ignored env HOSTNAME
  debug1: Sending env LC_ALL = en_US.UTF-8
  debug2: channel 2: request env confirm 0
  debug1: Sending env LC_CTYPE = C
  debug2: channel 2: request env confirm 0
  debug3: Ignored env SHELL
  debug3: Ignored env LOGNAME
  debug3: Ignored env USER
  debug3: Ignored env USERNAME
  debug3: Ignored env MAIL
  debug3: Ignored env SUDO_COMMAND
  debug3: Ignored env SUDO_USER
  debug3: Ignored env SUDO_UID
  debug3: Ignored env SUDO_GID
  debug3: Ignored env SHLVL
  debug3: Ignored env PWD
  debug3: Ignored env OLDPWD
  debug3: Ignored env mapfile
  debug3: Ignored env HISTFILE
  debug3: Ignored env HISTSIZE
  debug3: Ignored env SAVEHIST
  debug3: Ignored env PAGER
  debug3: Ignored env EDITOR
  debug3: Ignored env DEBFULLNAME
  debug3: Ignored env DEBEMAIL
  debug3: Ignored env _
  debug2: channel 2: request shell confirm 1
  debug2: callback done
  debug2: channel 2: open confirm rwindow 0 rmax 32768
  debug2: channel_input_status_confirm: type 99 id 2
  debug2: PTY allocation request accepted on channel 2
  debug2: channel 2: rcvd adjust 2097152
  debug2: channel_input_status_confirm: type 99 id 2
  debug2: shell request accepted on channel 2
  Welcome to Ubuntu 12.04.4 LTS (GNU/Linux 3.2.0-60-generic x86_64)

   * Documentation:  https://help.ubuntu.com/

  0 packages can be updated.
  0 updates are security updates.

  *** System restart required ***
  Last login: Sun May  4 22:08:47 2014 from 216.7.125.200
  <username>@andersen-Presario-F500-GF606UA-ABA:~# ifconfig -a
  <other interfaces removed for brevity>
  tap0      Link encap:Ethernet  HWaddr 3a:8b:12:39:49:11  
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:500 
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  root@andersen-Presario-F500-GF606UA-ABA:~#


  ##################################################
  New client:
  ssh -p 38613 <username>@<IP> -w any -o Tunnel=ethernet -vvv
  OpenSSH_6.6, OpenSSL 1.0.1f 6 Jan 2014
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  debug1: auto-mux: Trying existing master
  debug1: Control socket "<path hidden>" does not exist
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to <IP> [<IP>] port 38613.
  debug1: Connection established.
  debug1: permanently_set_uid: 0/0
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/root/.ssh/id_rsa" as a RSA1 public key
  debug1: identity file /root/.ssh/id_rsa type 1
  debug1: identity file /root/.ssh/id_rsa-cert type -1
  debug1: identity file /root/.ssh/id_dsa type -1
  debug1: identity file /root/.ssh/id_dsa-cert type -1
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/root/.ssh/id_ecdsa" as a RSA1 public key
  debug1: identity file /root/.ssh/id_ecdsa type 3
  debug1: identity file /root/.ssh/id_ecdsa-cert type -1
  debug1: identity file /root/.ssh/id_ed25519 type -1
  debug1: identity file /root/.ssh/id_ed25519-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.6p1 Ubuntu-2ubuntu1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1.3
  debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1.3 pat OpenSSH_5* compat 0x0c000000
  debug2: fd 3 setting O_NONBLOCK
  debug3: put_host_port: [<IP>]:38613
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug2: kex_parse_kexinit: curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v01@xxxxxxxxxxx,ssh-dss-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v00@xxxxxxxxxxx,ssh-dss-cert-v00@xxxxxxxxxxx,ssh-ed25519,ssh-rsa,ssh-dss
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-ripemd160-etm@xxxxxxxxxxx,hmac-sha1-96-etm@xxxxxxxxxxx,hmac-md5-96-etm@xxxxxxxxxxx,hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
  debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: mac_setup: setup hmac-md5
  debug1: kex: server->client aes128-ctr hmac-md5 none
  debug2: mac_setup: setup hmac-md5
  debug1: kex: client->server aes128-ctr hmac-md5 none
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA <hex>
  debug3: put_host_port: [<IP>]:38613
  debug3: put_host_port: [<IP>]:38613
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug3: load_hostkeys: loading entries for host "[<IP>]:38613" from file "/root/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:24
  debug3: load_hostkeys: loaded 1 keys
  debug1: Host '[<IP>]:38613' is known and matches the ECDSA host key.
  debug1: Found key in /root/.ssh/known_hosts:24
  debug1: ssh_ecdsa_verify: signature correct
  debug2: kex_derive_keys
  debug2: set_newkeys: mode 1
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug2: set_newkeys: mode 0
  debug1: SSH2_MSG_NEWKEYS received
  debug1: Roaming not allowed by server
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug2: service_accept: ssh-userauth
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug2: key: /root/.ssh/id_rsa (0xhex),
  debug2: key: /root/.ssh/id_dsa ((nil)),
  debug2: key: /root/.ssh/id_ecdsa (0xhex),
  debug2: key: /root/.ssh/id_ed25519 ((nil)),
  debug1: Authentications that can continue: publickey
  debug3: start over, passed a different list publickey
  debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
  debug3: authmethod_lookup publickey
  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
  debug2: we sent a publickey packet, wait for reply
  debug1: Authentications that can continue: publickey
  debug1: Trying private key: /root/.ssh/id_dsa
  debug3: no such identity: /root/.ssh/id_dsa: No such file or directory
  debug1: Offering ECDSA public key: /root/.ssh/id_ecdsa
  debug3: send_pubkey_test
  debug2: we sent a publickey packet, wait for reply
  debug1: Server accepts key: pkalg ecdsa-sha2-nistp521 blen 172
  debug2: input_userauth_pk_ok: fp <hex>
  debug3: sign_and_send_pubkey: ECDSA <hex>
  debug1: key_parse_private2: missing begin marker
  debug1: read PEM private key done: type ECDSA
  debug1: Authentication succeeded (publickey).
  Authenticated to <IP> ([<IP>]:38613).
  debug1: Requesting tun unit 2147483647 in mode 1 <------------------------------------This part seems different: mode 1 instead of 2?
  debug1: sys_tun_open: tunnel mode 1 fd 4
  debug2: fd 4 setting O_NONBLOCK
  debug3: fd 4 is O_NONBLOCK
  debug1: channel 0: new [tun]
  debug1: setting up multiplex master socket
  debug3: muxserver_listen: temporary control path <path hidden>
  debug2: fd 5 setting O_NONBLOCK
  debug3: fd 5 is O_NONBLOCK
  debug3: fd 5 is O_NONBLOCK
  debug1: channel 1: new [<hidden>]
  debug3: muxserver_listen: mux listener channel 1 fd 5
  debug1: channel 2: new [client-session]
  debug3: ssh_session2_open: channel_new: 2
  debug2: channel 2: send open
  debug1: Entering interactive session.
  debug2: channel 0: open confirm rwindow 2097152 rmax 32768
  debug2: callback start
  debug2: fd 3 setting TCP_NODELAY
  debug3: packet_set_tos: set IP_TOS 0x10
  debug2: client_session2_setup: id 2
  debug2: channel 2: request pty-req confirm 1
  debug1: Sending environment.
  debug3: Ignored env LANGUAGE
  debug3: Ignored env PATH
  debug1: Sending env LANG = en_US.UTF-8
  debug2: channel 2: request env confirm 0
  debug3: Ignored env DISPLAY
  debug3: Ignored env XAUTHORITY
  debug3: Ignored env TERM
  debug3: Ignored env HOME
  debug3: Ignored env TZ
  debug3: Ignored env HOSTNAME
  debug1: Sending env LC_ALL = en_US.UTF-8
  debug2: channel 2: request env confirm 0
  debug1: Sending env LC_CTYPE = C
  debug2: channel 2: request env confirm 0
  debug3: Ignored env SHELL
  debug3: Ignored env LOGNAME
  debug3: Ignored env USER
  debug3: Ignored env USERNAME
  debug3: Ignored env MAIL
  debug3: Ignored env SUDO_COMMAND
  debug3: Ignored env SUDO_USER
  debug3: Ignored env SUDO_UID
  debug3: Ignored env SUDO_GID
  debug3: Ignored env SHLVL
  debug3: Ignored env PWD
  debug3: Ignored env OLDPWD
  debug3: Ignored env mapfile
  debug3: Ignored env HISTFILE
  debug3: Ignored env HISTSIZE
  debug3: Ignored env SAVEHIST
  debug3: Ignored env PAGER
  debug3: Ignored env EDITOR
  debug3: Ignored env DEBFULLNAME
  debug3: Ignored env DEBEMAIL
  debug3: Ignored env _
  debug2: channel 2: request shell confirm 1
  debug2: callback done
  debug2: channel 2: open confirm rwindow 0 rmax 32768
  debug2: channel_input_status_confirm: type 99 id 2
  debug2: PTY allocation request accepted on channel 2
  debug2: channel 2: rcvd adjust 2097152
  debug2: channel_input_status_confirm: type 99 id 2
  debug2: shell request accepted on channel 2
  Welcome to Ubuntu 12.04.4 LTS (GNU/Linux 3.2.0-60-generic x86_64)

   * Documentation:  https://help.ubuntu.com/

  0 packages can be updated.
  0 updates are security updates.

  *** System restart required ***
  Last login: Sun May  4 22:11:12 2014 from 216.7.125.200
  <username>@andersen-Presario-F500-GF606UA-ABA:~# ifconfig -a
  <other interfaces removed for brevity>
  tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
            POINTOPOINT NOARP MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:500 
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  root@andersen-Presario-F500-GF606UA-ABA:~#

  I'd do a bisect search if I had a way to build the results of each
  test into a package that I can cleanly remove from my system (so I can
  go back to a working version so I can get things done :)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: openssh-client 1:6.6p1-2ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: nvidia zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  Date: Sun May  4 22:21:00 2014
  RelatedPackageVersions:
   ssh-askpass       N/A
   libpam-ssh        N/A
   keychain          N/A
   ssh-askpass-gnome 1:6.6p1-2ubuntu1
  SSHClientVersion: OpenSSH_6.6p1 Ubuntu-2ubuntu1, OpenSSL 1.0.1f 6 Jan 2014
  SourcePackage: openssh
  UpgradeStatus: Upgraded to trusty on 2014-04-19 (16 days ago)
  modified.conffile..etc.ssh.ssh.config: [modified]
  mtime.conffile..etc.ssh.ssh.config: 2014-01-09T17:28:07.618248

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