Public bug reported:
For one network with multiple slaac IPv6 subnets, the created port will have
all IPv6 subnets address automatically by default. For some use case, we do not
want the port to have all the IPv6 address from all IPv6 subnets, but only one
of it. It is a behavior for neutron now. This is the code:
https://github.com/openstack/neutron/blob/master/neutron/db/ipam_pluggable_backend.py#L256
How to reproduce:
$ openstack network create ipv6-net
$ openstack subnet create --network ipv6-net --ip-version 4 --subnet-range
192.168.1.0/24 ipv4-sub-1
$ openstack subnet create --network ipv6-net --ip-version 4 --subnet-range
192.168.2.0/24 ipv4-sub-2
$ openstack subnet create --network ipv6-net --ip-version 6 --subnet-range
2001::/64 --ipv6-ra-mode slaac --ipv6-address-mode slaac ipv6-sub-1
$ openstack subnet create --network ipv6-net --ip-version 6 --subnet-range
2002::/64 --ipv6-ra-mode slaac --ipv6-address-mode slaac ipv6-sub-2
create a port, you will see it will have all IPv6 address from all IPv6
subnets:
openstack port create --network ipv6-net ipv6-port-1
| fixed_ips | ip_address='192.168.1.19',
subnet_id='8e0d9fc0-de72-47fa-b3fc-384f19f6c0ae' |
| | ip_address='2001::f816:3eff:fe49:651b',
subnet_id='6352875f-c406-4a7c-9722-857ee9c58455' |
| | ip_address='2002::f816:3eff:fe49:651b',
subnet_id='193b76ec-8527-4c48-9ad6-7922d0d2e63d' |
| id | 1736e437-fb8e-442b-9b04-343eae48a250
|
| ip_address | None
|
| mac_address | fa:16:3e:49:65:1b
|
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1849510
Title:
Multiple IPv6 subnets with SLAAC
Status in neutron:
New
Bug description:
For one network with multiple slaac IPv6 subnets, the created port will have
all IPv6 subnets address automatically by default. For some use case, we do not
want the port to have all the IPv6 address from all IPv6 subnets, but only one
of it. It is a behavior for neutron now. This is the code:
https://github.com/openstack/neutron/blob/master/neutron/db/ipam_pluggable_backend.py#L256
How to reproduce:
$ openstack network create ipv6-net
$ openstack subnet create --network ipv6-net --ip-version 4 --subnet-range
192.168.1.0/24 ipv4-sub-1
$ openstack subnet create --network ipv6-net --ip-version 4 --subnet-range
192.168.2.0/24 ipv4-sub-2
$ openstack subnet create --network ipv6-net --ip-version 6 --subnet-range
2001::/64 --ipv6-ra-mode slaac --ipv6-address-mode slaac ipv6-sub-1
$ openstack subnet create --network ipv6-net --ip-version 6 --subnet-range
2002::/64 --ipv6-ra-mode slaac --ipv6-address-mode slaac ipv6-sub-2
create a port, you will see it will have all IPv6 address from all IPv6
subnets:
openstack port create --network ipv6-net ipv6-port-1
| fixed_ips | ip_address='192.168.1.19',
subnet_id='8e0d9fc0-de72-47fa-b3fc-384f19f6c0ae' |
| | ip_address='2001::f816:3eff:fe49:651b',
subnet_id='6352875f-c406-4a7c-9722-857ee9c58455' |
| | ip_address='2002::f816:3eff:fe49:651b',
subnet_id='193b76ec-8527-4c48-9ad6-7922d0d2e63d' |
| id | 1736e437-fb8e-442b-9b04-343eae48a250
|
| ip_address | None
|
| mac_address | fa:16:3e:49:65:1b
|
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https://bugs.launchpad.net/neutron/+bug/1849510/+subscriptions
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