Hi,

When I attach 2 interfaces from the same subnet to a VM, there is no error 
returned and
both interfaces come up.


lab@tme211:/opt/stack/logs$ nova interface-attach --net-id 
e38dba4a-74ed-4312-ba21-2a04b5c5a5b5 cirros-1

lab@tme211:/opt/stack/logs$ nova list

+--------------------------------------+----------+--------+------------+-------------+-------------------+

| ID                                   | Name     | Status | Task State | Power 
State | Networks          |

+--------------------------------------+----------+--------+------------+-------------+-------------------+

| 9d88d0b5-2453-4657-8058-987980ec7744 | cirros-1 | ACTIVE | -          | 
Running     | private=10.0.0.10 |

+--------------------------------------+----------+--------+------------+-------------+-------------------+

lab@tme211:/opt/stack/logs$ nova interface-attach --net-id 
e38dba4a-74ed-4312-ba21-2a04b5c5a5b5 cirros-1

lab@tme211:/opt/stack/logs$ nova list

+--------------------------------------+----------+--------+------------+-------------+------------------------------+

| ID                                   | Name     | Status | Task State | Power 
State | Networks                     |

+--------------------------------------+----------+--------+------------+-------------+------------------------------+

| 9d88d0b5-2453-4657-8058-987980ec7744 | cirros-1 | ACTIVE | -          | 
Running     | private=10.0.0.10, 10.0.0.11 |

+--------------------------------------+----------+--------+------------+-------------+------------------------------+


$ ifconfig

eth0      Link encap:Ethernet  HWaddr FA:16:3E:92:2D:2B

          inet addr:10.0.0.10  Bcast:10.0.0.255  Mask:255.255.255.0

          inet6 addr: fe80::f816:3eff:fe92:2d2b/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:514 errors:0 dropped:0 overruns:0 frame:0

          TX packets:307 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:48342 (47.2 KiB)  TX bytes:41750 (40.7 KiB)


eth1      Link encap:Ethernet  HWaddr FA:16:3E:EF:55:BC

          inet addr:10.0.0.11  Bcast:10.0.0.255  Mask:255.255.255.0

          inet6 addr: fe80::f816:3eff:feef:55bc/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:49 errors:0 dropped:0 overruns:0 frame:0

          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:3556 (3.4 KiB)  TX bytes:1120 (1.0 KiB)



Should this operation be allowed?


Thanks,

Danny
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