Public bug reported:
Reproduce:
1) I enable DVR in devstack. After installation, there is a DVR, an ipv4+ipv6
router gateway in DVR, an ipv4 router interface in DVR, and an ipv6 router
interface in DVR.
2) I want to use delete the v4 subnet. So, I delete the ipv4 router gateway.
[fedora@normal-dvr devstack]$ neutron router-interface-delete router1
private-subnet
Removed interface from router router1.
3) I try to delete the v4 subnet, but neutron server tell me that the subnet
can't be deleted, because there is still port(s) being used.
[fedora@normal-dvr devstack]$ neutron subnet-delete private-subnet
Unable to complete operation on subnet d0282930-95ca-4f64-9ae9-8c22be9cb3ab:
One or more ports have an IP allocation from this subnet.
4) Check the port-list, I found the csnat port is still there.
[fedora@normal-dvr devstack]$ neutron port-list
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips
|
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
| bf042acf-40d5-4503-b62e-7389a6fc9bca | | fa:16:3e:47:a5:40 |
{"subnet_id": "d0282930-95ca-4f64-9ae9-8c22be9cb3ab", "ip_address": "10.0.0.3"}
|
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
5) But look into the snat namespace, there is no such port there.
Then I can't delete the subnet, because the port is there. I can't delete the
port, because the port has a device owner network:router_centralized_snat. I
even can't attach the subnet back to DVR, neutron server will tell me: Router
already has a port on subnet.
This problem will not be reproduce if there is no ipv6 subnet attached
to DVR.
Expect: Can use ipv4 no matter if there is ipv6 subnet attached to DVR.
** Affects: neutron
Importance: Undecided
Assignee: Hong Hui Xiao (xiaohhui)
Status: New
** Tags: ipv6 l3-dvr-backlog
** Changed in: neutron
Assignee: (unassigned) => Hong Hui Xiao (xiaohhui)
** Tags added: l3-dvr-backlog
** Tags added: ipv6
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https://bugs.launchpad.net/bugs/1581348
Title:
Can't delete a v4 csnat port when there is a v6 router interface
attached
Status in neutron:
New
Bug description:
Reproduce:
1) I enable DVR in devstack. After installation, there is a DVR, an ipv4+ipv6
router gateway in DVR, an ipv4 router interface in DVR, and an ipv6 router
interface in DVR.
2) I want to use delete the v4 subnet. So, I delete the ipv4 router gateway.
[fedora@normal-dvr devstack]$ neutron router-interface-delete router1
private-subnet
Removed interface from router router1.
3) I try to delete the v4 subnet, but neutron server tell me that the subnet
can't be deleted, because there is still port(s) being used.
[fedora@normal-dvr devstack]$ neutron subnet-delete private-subnet
Unable to complete operation on subnet d0282930-95ca-4f64-9ae9-8c22be9cb3ab:
One or more ports have an IP allocation from this subnet.
4) Check the port-list, I found the csnat port is still there.
[fedora@normal-dvr devstack]$ neutron port-list
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips
|
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
| bf042acf-40d5-4503-b62e-7389a6fc9bca | | fa:16:3e:47:a5:40 |
{"subnet_id": "d0282930-95ca-4f64-9ae9-8c22be9cb3ab", "ip_address": "10.0.0.3"}
|
+--------------------------------------+------+-------------------+-------------------------------------------------------------------------------------------------------------+
5) But look into the snat namespace, there is no such port there.
Then I can't delete the subnet, because the port is there. I can't delete the
port, because the port has a device owner network:router_centralized_snat. I
even can't attach the subnet back to DVR, neutron server will tell me: Router
already has a port on subnet.
This problem will not be reproduce if there is no ipv6 subnet attached
to DVR.
Expect: Can use ipv4 no matter if there is ipv6 subnet attached to
DVR.
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1581348/+subscriptions
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