neutron/releasenotes/notes/fip-binding-limitation-1d2509950847b085.yaml
LIU Yulong 433228dd78 Prevent bind fip to port has port forwarding
If one port has port forwarding and the port is under
a dvr router, then binding floating IP to this port
will not be allowed.

Change-Id: Ia014e18264b43cf751a5bc0e82bc55d106582620
Closes-Bug: #1799138
2019-01-03 12:41:55 +08:00

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other:
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If an instance port is under a dvr router, and the port already has
binding port forwarding(s). Neutron will no longer allow binding a
floating IP to that port again, because dvr floating IP traffic rules
will break the existing port forwarding functionality.