pexpect failure

VM_to_NTK_IP inside Traffic Class for ==  {'PVM1': ['11.11.11.7', 'e95cb89f-0b17-4388-9144-ac2bcc8f82f9'], 'PVM2': ['21.21.21.7', '578c0539-ade2-4c3e-96e2-2e06bf51d269']}
VM Properties ==  {'PVM1': {'src_ip': '11.11.11.7', 'netns': 'qdhcp-e95cb89f-0b17-4388-9144-ac2bcc8f82f9', 'dest_ip': ['21.21.21.7']}, 'PVM2': {'src_ip': '21.21.21.7', 'netns': 'qdhcp-578c0539-ade2-4c3e-96e2-2e06bf51d269', 'dest_ip': ['11.11.11.7']}}
Run Traffic for the Protocols: ['icmp', 'tcp', 'metadata'] and then analyze results
Entered test_setup, dest_ep is ['21.21.21.7']
test_setup: ip %s 21.21.21.7
 hostname
f3-compute-1.noiro.lab
[root@f3-compute-1 ~]
ip netns exec qdhcp-e95cb89f-0b17-4388-9144-ac2bcc8f82f9 ping 21.21.21.7 -c 2
ping 21.21.21.7 -c 2-e95cb89f-0b17-4388-9144-ac2bcc8f82f9
PING 21.21.21.7 (21.21.21.7) 56(84) bytes of data.
64 bytes from 21.21.21.7: icmp_seq=1 ttl=63 time=0.716 ms
64 bytes from 21.21.21.7: icmp_seq=2 ttl=63 time=0.222 ms

--- 21.21.21.7 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.222/0.469/0.716/0.247 ms
[root@f3-compute-1 ~]
Out ==NOIRO
Trying to SSH into VM 21.21.21.7.....
ip netns exec qdhcp-e95cb89f-0b17-4388-9144-ac2bcc8f82f9 ssh cirros@21.21.21.7
Entering sudo priviledged command mode
Stopping netcat session on port 80
output from ps is  ps -ef | grep [n]c | awk -F" " '{print $1
output from ps is
12

Starting netcat session on port 80
HTTP server command is: nohup nc -p 80 -n -lk -e 'echo -e Hi!'&
 hostname
f3-compute-1.noiro.lab
[root@f3-compute-1 ~]
ip netns exec qdhcp-e95cb89f-0b17-4388-9144-ac2bcc8f82f9 ping 11.11.11.7 -c 2
ping 11.11.11.7 -c 2-e95cb89f-0b17-4388-9144-ac2bcc8f82f9
PING 11.11.11.7 (11.11.11.7) 56(84) bytes of data.
64 bytes from 11.11.11.7: icmp_seq=1 ttl=64 time=0.914 ms
64 bytes from 11.11.11.7: icmp_seq=2 ttl=64 time=0.241 ms

--- 11.11.11.7 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.241/0.577/0.914/0.337 ms
[root@f3-compute-1 ~]
Out ==NOIRO
Trying to SSH into VM 11.11.11.7.....
ip netns exec qdhcp-e95cb89f-0b17-4388-9144-ac2bcc8f82f9 ssh cirros@11.11.11.7
Entering sudo priviledged command mode
Starting netcat session on port 80
HTTP server command is: nohup nc -p 80 -n -lk -e 'echo -e Hi!'&

ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether fa:16:3e:5a:b5:6f brd ff:ff:ff:ff:ff:ff
    inet 11.11.11.7/28 brd 11.11.11.15 scope global eth0
    inet6 fe80::f816:3eff:fe5a:b56f/64 scope link
       valid_lft forever preferred_lft forever

ping command: ping 21.21.21.7 -c 3 -s 1000
Sent ICMP packets
ICMP result:  ping 21.21.21.7 -c 3 -s 1000
PING 21.21.21.7 (21.21.21.7): 1000 data bytes
1008 bytes from 21.21.21.7: seq=0 ttl=62 time=0.845 ms
1008 bytes from 21.21.21.7: seq=1 ttl=62 time=0.360 ms
1008 bytes from 21.21.21.7: seq=2 ttl=62 time=0.275 ms

--- 21.21.21.7 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0.275/0.493/0.845 ms

Traceback (most recent call last):
  File "run_ml2_sanity.py", line 82, in <module>
    if test_traff.traff_from_ml2_tenants(tnt1) == 0:
  File "/home/noiro/noirotest/testcases/testcases_sanity/common_sanity_methods.py", line 958, in traff_from_ml2_tenants
    if not vm_traff.run_and_verify_traffic(proto,tcp_syn_only=1):
  File "/home/noiro/noirotest/libs/gbp_pexp_traff_libs.py", line 269, in run_and_verify_traffic
    results = self.test_run(protocols=proto,tcp_syn_only=tcp_syn_only,jumbo=jumbo,no_ipv6=no_ipv6)
  File "/home/noiro/noirotest/libs/gbp_pexp_traff_libs.py", line 252, in test_run
    self.vm_test_traffic(pexpect_session, protocols, results, tcp_syn_only=tcp_syn_only, port=port, no_ipv6=no_ipv6)
  File "/home/noiro/noirotest/libs/gbp_pexp_traff_libs.py", line 443, in vm_test_traffic
    pexpect_session.expect(self.vm_prompt)
  File "/usr/local/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 321, in expect
    timeout, searchwindowsize, async)
  File "/usr/local/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 345, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/local/lib/python2.7/dist-packages/pexpect/expect.py", line 107, in expect_loop
    return self.timeout(e)
  File "/usr/local/lib/python2.7/dist-packages/pexpect/expect.py", line 70, in timeout
    raise TIMEOUT(msg)
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<pexpect.pty_spawn.spawn object at 0x7fa9a8466c90>
command: /usr/bin/ssh
args: ['/usr/bin/ssh', 'root@172.28.184.46']
buffer (last 100 chars): ' nc -w 1 -v 21.21.21.7 -z 22\r\n21.21.21.7 (21.21.21.7:22) open\r\nSSH-2.0-dropbear_2012.55\r\r\n'
before (last 100 chars): ' nc -w 1 -v 21.21.21.7 -z 22\r\n21.21.21.7 (21.21.21.7:22) open\r\nSSH-2.0-dropbear_2012.55\r\r\n'
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 20777
child_fd: 7
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile("\$")