SSH Connection does not complete.

When attempting to run an ansible module on a remote host, the SSH connection never fully completes…

[myhost myusername 11:46:23]~ $ ansible -vvvvvvvvv -m setup -i ~/dave_ansible/ansible/hosts.txt remotehost -u user -k -K --sudo
SSH password:
SUDO password[defaults to SSH password]:
ESTABLISH CONNECTION FOR USER: user
REMOTE_MODULE setup
EXEC sshpass -d7 ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ForwardAgent=yes -o ControlPath=“/home/myusername/.ansible/cp/ansible-ssh-%h-%p-%r” -o GSSAPIAuthentication=no -o PubkeyAuthentication=no -o User=user -o ConnectTimeout=10 remotehost /bin/sh -c ‘mkdir -p $HOME/.ansible/tmp/ansible-tmp-1446223631.25-150226097303689 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1446223631.25-150226097303689 && echo $HOME/.ansible/tmp/ansible-tmp-1446223631.25-150226097303689’

Watching the connection on the far side, this is as far as it gets:

Oct 30 11:47:11 remotehost sshd[12366]: debug1: Forked child 12369.
Oct 30 11:47:11 remotehost sshd[12369]: Set /proc/self/oom_score_adj to 0
Oct 30 11:47:11 remotehost sshd[12369]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8
Oct 30 11:47:11 remotehost sshd[12369]: debug1: inetd sockets after dupping: 3, 3
Oct 30 11:47:11 remotehost sshd[12369]: Connection from 1.2.3.4 port 48580
Oct 30 11:47:11 remotehost sshd[12369]: debug1: Client protocol version 2.0; client software version OpenSSH_6.2
Oct 30 11:47:11 remotehost sshd[12369]: debug1: match: OpenSSH_6.2 pat OpenSSH*
Oct 30 11:47:11 remotehost sshd[12369]: debug1: Enabling compatibility mode for protocol 2.0
Oct 30 11:47:11 remotehost sshd[12369]: debug1: Local version string SSH-2.0-OpenSSH_5.3
Oct 30 11:47:11 remotehost sshd[12370]: debug1: permanently_set_uid: 74/74
Oct 30 11:47:11 remotehost sshd[12370]: debug1: list_hostkey_types: ssh-rsa,ssh-dss
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_KEXINIT sent
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_KEXINIT received
Oct 30 11:47:11 remotehost sshd[12370]: debug1: kex: client->server aes128-ctr hmac-md5
Oct 30 11:47:11 remotehost sshd[12370]: debug1: kex: server->client aes128-ctr hmac-md5
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
Oct 30 11:47:11 remotehost sshd[12370]: debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_NEWKEYS sent
Oct 30 11:47:11 remotehost sshd[12370]: debug1: expecting SSH2_MSG_NEWKEYS
Oct 30 11:47:11 remotehost sshd[12370]: debug1: SSH2_MSG_NEWKEYS received
Oct 30 11:47:11 remotehost sshd[12370]: debug1: KEX done
Oct 30 11:47:11 remotehost sshd[12370]: debug1: userauth-request for user user service ssh-connection method none
Oct 30 11:47:11 remotehost sshd[12370]: debug1: attempt 0 failures 0
Oct 30 11:47:11 remotehost sshd[12369]: debug1: PAM: initializing for “user”
Oct 30 11:47:11 remotehost sshd[12369]: debug1: PAM: setting PAM_RHOST to “1.2.3.4”
Oct 30 11:47:11 remotehost sshd[12369]: debug1: PAM: setting PAM_TTY to “ssh”
Oct 30 11:47:11 remotehost sshd[12370]: debug1: userauth_send_banner: sent