Comment 1 for bug 1602150

FYI: This is what the client is actually sending to the server:

DEBUG: keystoneauth.session REQ: curl -g -i -X PUT http://192.168.33.12:9696/v2.0/networks/80a98608-a814-4a28-91e9-aa6c99fe65ba/tags/.json -H "User-Agent: python-neutronclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}4529f87d3b08a34dd027de34cfc3763f5767c5c1"
DEBUG: keystoneauth.session RESP: [201] Content-Type: application/json Content-Length: 4 X-Openstack-Request-Id: req-157ca980-4c25-4426-9ecc-b278dc3e5101 Date: Tue, 12 Jul 2016 18:50:50 GMT Connection: keep-alive

specifically:
curl -g -i -X PUT http://192.168.33.12:9696/v2.0/networks/80a98608-a814-4a28-91e9-aa6c99fe65ba/tags/.json