** Changed in: neutron
Status: In Progress => Opinion
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https://bugs.launchpad.net/bugs/1938788
Title:
Validate if fixed_ip given for port isn't the same as subnet's
gateway_ip
Status in neutron:
Opinion
Bug description:
Currently when new port is created with fixed_ip given, neutron is not
validating if that fixed_ip address isn't the same as subnet's gateway
IP. That may cause problems, like e.g.:
$ openstack subnet show <subnet-id>
| allocation_pools | 10.0.0.2-10.0.0.254
| cidr | 10.0.0.0/24
| enable_dhcp | True
...
| gateway_ip | 10.0.0.1
$ nova boot --flavor test --image test --nic
net-id=<network-id>,v4-fixed-ip=10.0.0.1 test-vm1
The instance will be created successfully, but after that, network
communication issue could be happened since the gateway ip conflict.
So Neutron should forbid creation of the port with gateway's ip
address if it is not router's port (device_owner isn't set for one of
the router device owners).
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