What we probably should do, is create a patch that when
ipv6_address_mode is unset, but the ipv6_ra_mode attribute is set, is to
not allocate an IPv6 address to the port?
** Changed in: neutron
Status: Invalid => New
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https://bugs.launchpad.net/bugs/1358297
Title:
Port doesn't receive IP SLAAC in subnets with Router advertisements
without dnsmasq
Status in OpenStack Neutron (virtual network service):
New
Bug description:
When creating network and subnet of IPv6 with arguments: --ipv6-ra-
mode=slaac or --ipv6-ra-mode=dhcp-stateless and without
ipv6_address_mode set, the created port doesn't receive SLLAC IPv6
address, but one of fixed IPs.
For example:
Let's create network and subnet:
~$ neutron net-create net12
Created a new network:
...
~$ neutron subnet-create --name=subnet-net12 --ipv6-ra-mode=slaac
--ip-version=6 net12 2004::/64
+-------------------+----------------------------------------------------------+
| Field | Value
|
+-------------------+----------------------------------------------------------+
| allocation_pools | {"start": "2004::2", "end":
"2004::ffff:ffff:ffff:fffe"} |
| cidr | 2004::/64
|
| dns_nameservers |
|
| enable_dhcp | True
|
| gateway_ip | 2004::1
|
| host_routes |
|
| id | 81287be4-0d5a-4185-bdb4-4f3bcc6a0bdc
|
| ip_version | 6
|
| ipv6_address_mode |
|
| ipv6_ra_mode | slaac
|
| name | subnet-net12
|
...
~$ neutron router-create router1
Created a new router:
...
~$ neutron router-interface-add 2ca34fba-258f-4395-95b0-4fe32e4f19b7
81287be4-0d5a-4185-bdb4-4f3bcc6a0bdc
Added interface af8ac8d5-9461-4998-b561-007e3646f53f to router
2ca34fba-258f-4395-95b0-4fe32e4f19b7.
Now should be Router Advertisements in the network which should propagate /64
subnet mask for all hosts.
Created port now should receive SLAAC address and mask from RAs. But:
localadmin@devstack-server:~$ neutron port-create net12
Created a new port:
+-----------------------+--------------------------------------------------------------------------------+
| Field | Value
|
+-----------------------+--------------------------------------------------------------------------------+
| admin_state_up | True
|
| allowed_address_pairs |
|
| binding:vnic_type | normal
|
| device_id |
|
| device_owner |
|
| fixed_ips | {"subnet_id":
"81287be4-0d5a-4185-bdb4-4f3bcc6a0bdc", "ip_address": "2004::2"} |
| id | 956d0c15-8ba4-473d-9674-a74d4cf19a47
|
| mac_address | fa:16:3e:4b:14:2b
|
| name |
|
| network_id | b9bfb75a-8908-4fbf-a771-74ec345a0ee4
|
| security_groups | 5c0d2c99-65a4-497c-a5c4-3cb241f669f4
|
| status | DOWN
|
| tenant_id | 74267b5732114ca1a11b7e2849156363
|
+-----------------------+--------------------------------------------------------------------------------+
Port receives IP from defualt fixed IP range, it means SLAAC doesn't work.
The same thing with ra_mode=dhcpv6-stateless and add_mode=None.
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