multicloud: minions in azure are unreachable after contrail provisioning

After contrail provisioning (deploy.yml) observed that the minions in the azure cloud became unreachable, even from the local vpn gateway in azure.

root@ms-gw-1:/etc/contrail/vrouter# ping 172.16.23.5
PING 172.16.23.5 (172.16.23.5) 56(84) bytes of data.
From 172.16.23.4 icmp_seq=1 Destination Host Unreachable
From 172.16.23.4 icmp_seq=2 Destination Host Unreachable
From 172.16.23.4 icmp_seq=3 Destination Host Unreachable
^C
--- 172.16.23.5 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3016ms
pipe 3

root@ms-gw-1:/etc/contrail/vrouter# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:0d:3a:06:39:b7
          inet addr:172.16.23.4 Bcast:172.16.23.63 Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:205663 errors:0 dropped:3 overruns:0 frame:0
          TX packets:951170 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:13402418 (13.4 MB) TX bytes:1372869224 (1.3 GB)