Comment 1 for bug 1571856

Main issue is following:
2016-04-18 14:54:26,683 - INFO [pool-1-thread-1:ApiConnectorImpl@162] -
>> Request: POST, /instance-ips,
>>{"instance-ip":{"instance_ip_secondary":false,"id_perms":{"enable":true,"
>>user_visible":false,"creator":"vcenter-plugin"},"display_name":"ip-testvn
>>1-33-VM-200-99","virtual_network_refs":[{"to":["default-domain","vCenter"
>>,"testvn1-33"],"attr":null,"href":null,"uuid":null}],"virtual_machine_int
>>erface_refs":[{"to":["default-domain","vCenter","7e0f2836-a992-429a-b1a1-
>>8298d6f72f28"],"attr":null,"href":null,"uuid":null}],"name":"801ce700-f0a
>>9-4224-8eca-c149bd34f4f6","uuid":"801ce700-f0a9-4224-8eca-c149bd34f4f6","
>>fq_name":["801ce700-f0a9-4224-8eca-c149bd34f4f6"]}}
2016-04-18 14:54:26,697 - INFO [pool-1-thread-1:ApiConnectorImpl@179] -
<< Response Status: HTTP/1.1 500 Internal Server Error
2016-04-18 14:54:26,697 - ERROR [pool-1-thread-1:ApiConnectorImpl@236] -
create api request failed: Internal Server Error
2016-04-18 14:54:26,697 - ERROR [pool-1-thread-1:ApiConnectorImpl@238] -
Failure message: Virtual-Network([u'default-domain', u'vCenter',
u'testvn1-33']) has exhausted subnet(all)
2016-04-18 14:54:26,697 - INFO [pool-1-thread-1:ApiConnectorImpl@165] -
>> Request: GET, /instance-ip/801ce700-f0a9-4224-8eca-c149bd34f4f6
2016-04-18 14:54:26,699 - INFO [pool-1-thread-1:ApiConnectorImpl@179] -
<< Response Status: HTTP/1.1 404 Not Found
2016-04-18 14:54:26,699 - WARN [pool-1-thread-1:ApiConnectorImpl@288] -
GET failed: Not Found

Plugin is up now.

33 times there was instance-ip creation error due to ip-address exhaustion.

testvn1-11 - 3
testvn1-12 - 3
testvn1-15 -2
testvn1-17 - 3
testvn1-19 - 3
testvn1-20 - 3
testvn1-22 - 3

testvn1-23
testvn1-27 - 3
testvn1-32 - 3
testvn1-33 - 3
testvn1-34 - 2
testvn1-99 - 1

-Sachin