"vrouter operation failed" messages from agent with analyzer configured

[Vedamurthy Joshi]

R2.20 Build 16 Ubuntu 14.04 Juno multi-node setup

In this multinode ToR setup, on configuring an analyzer to mirror BMS to VM traffic, the below errors were seen :

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contrail-vrouter-agent (nodek1) 11m
VRouter operation failed. Error < 22 : Invalid argument >. Object < Flow : 68492 with Source IP: 10.204.216.222 Source port: 50608 Destination IP: 148.195.221.5 Destination port: 8099 Protocol 17 >. Operation < Change >. Message number : 877949
-------------------------

env.roledefs = {
    'all': [host1, host2, host3, host4, host5, host6],
    'cfgm': [host1,host2,host3],
    'openstack': [host2],
    'control': [host1,host2,host3],
    'compute': [host4,host5, host6],
    'collector': [host1,host2,host3],
    'webui': [host1],
    'database': [host1,host2,host3],
    'toragent': [host6],
    'tsn': [host6],
    'build': [host_build],
}

env.hostnames = {
    'all': ['nodec1', 'nodec2', 'nodec3', 'nodek1', 'nodek2', 'nodek3']
}