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Message #34714
[Bug 1437499] Re: init_l3 should consider all address scopes
** Changed in: neutron
Status: Fix Committed => Fix Released
** Changed in: neutron
Milestone: None => liberty-1
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https://bugs.launchpad.net/bugs/1437499
Title:
init_l3 should consider all address scopes
Status in OpenStack Neutron (virtual network service):
Fix Released
Bug description:
Currently init_l3 retrieves the list of global addresses from the
kernel on a specific device in a network namespace. If any of the
addresses are not in the ip_cidrs argument to init_l3, they will be
deleted. The problem with only listing global addresses is that if a
site-local or link-local address is added during a subnet-create, and
the user wishes to later delete the address, init_l3 will never
consider that address for deletion.
To fix this, init_l3 should not limit its scope when listing addresses
on an interface. It should, however, ignore the default IPv6 link-
local address assigned by the operating system as this address is not
known to Neutron and should not be deleted.
Steps to reproduce:
dboik@bxb-ds-49:~/devstack$ neutron subnet-create --ip-version 6 --ipv6-ra-mode slaac --ipv6-address-mode slaac --name link private fe80:cafe:dead:beef::/64
Created a new subnet:
+-------------------+---------------------------------------------------------------------------------------+
| Field | Value |
+-------------------+---------------------------------------------------------------------------------------+
| allocation_pools | {"start": "fe80:cafe:dead:beef::2", "end": "fe80:cafe:dead:beef:ffff:ffff:ffff:fffe"} |
| cidr | fe80:cafe:dead:beef::/64 |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | fe80:cafe:dead:beef::1 |
| host_routes | |
| id | f40e6e8d-49cd-4028-ad09-856bd741f7ca |
| ip_version | 6 |
| ipv6_address_mode | slaac |
| ipv6_ra_mode | slaac |
| name | link |
| network_id | 4a9e2ed1-7879-46fd-8e97-442938d77227 |
| subnetpool_id | |
| tenant_id | d288832359484118929c2966a925b15f |
+-------------------+---------------------------------------------------------------------------------------+
dboik@bxb-ds-49:~/devstack$ neutron router-interface-add router1 link
Added interface f4d7956d-ead2-4a49-9a6e-b11a265961bd to router router1.
dboik@bxb-ds-49:~/devstack$ neutron router-port-list router1
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
| 117bed46-afb5-4dcc-bfb2-1225a6fd618e | | fa:16:3e:86:4e:48 | {"subnet_id": "d2128984-7286-44b8-9cd9-715f3a631581", "ip_address": "172.24.4.2"} |
| | | | {"subnet_id": "74bb178d-70b9-43ae-80a7-c4afa32d7fcf", "ip_address": "2001:420:2c50:200a::2"} |
| ab032480-9f52-48cf-aaa7-cee97cf3c678 | | fa:16:3e:11:4e:d9 | {"subnet_id": "5874654d-d3b4-464f-b020-22b7eb0a3b0d", "ip_address": "10.0.0.1"} |
| f4d7956d-ead2-4a49-9a6e-b11a265961bd | | fa:16:3e:41:03:42 | {"subnet_id": "85b6ddc6-a4fe-45d7-97c4-8adee2491b66", "ip_address": "fd42:002c:5020:0a00::1"} |
| | | | {"subnet_id": "f40e6e8d-49cd-4028-ad09-856bd741f7ca", "ip_address": "fe80:cafe:dead:beef::1"} |
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
dboik@bxb-ds-49:~/devstack$ sudo ip netns exec qrouter-45c1366e-9bda-40ea-b5a3-289226b82a2e ifconfig qr-f4d7956d-ea
qr-f4d7956d-ea Link encap:Ethernet HWaddr fa:16:3e:41:03:42
inet6 addr: fd42:2c:5020:a00::1/64 Scope:Global
inet6 addr: fe80::f816:3eff:fe41:342/64 Scope:Link
inet6 addr: fe80:cafe:dead:beef::1/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:67 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:148 (148.0 B) TX bytes:7526 (7.5 KB)
dboik@bxb-ds-49:~/devstack$ neutron router-interface-delete router1 link
Removed interface from router router1.
dboik@bxb-ds-49:~/devstack$ neutron router-port-list router1
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
| 117bed46-afb5-4dcc-bfb2-1225a6fd618e | | fa:16:3e:86:4e:48 | {"subnet_id": "d2128984-7286-44b8-9cd9-715f3a631581", "ip_address": "172.24.4.2"} |
| | | | {"subnet_id": "74bb178d-70b9-43ae-80a7-c4afa32d7fcf", "ip_address": "2001:420:2c50:200a::2"} |
| ab032480-9f52-48cf-aaa7-cee97cf3c678 | | fa:16:3e:11:4e:d9 | {"subnet_id": "5874654d-d3b4-464f-b020-22b7eb0a3b0d", "ip_address": "10.0.0.1"} |
| f4d7956d-ead2-4a49-9a6e-b11a265961bd | | fa:16:3e:41:03:42 | {"subnet_id": "85b6ddc6-a4fe-45d7-97c4-8adee2491b66", "ip_address": "fd42:002c:5020:0a00::1"} |
+--------------------------------------+------+-------------------+-----------------------------------------------------------------------------------------------+
dboik@bxb-ds-49:~/devstack$ sudo ip netns exec qrouter-45c1366e-9bda-40ea-b5a3-289226b82a2e ifconfig qr-f4d7956d-ea
qr-f4d7956d-ea Link encap:Ethernet HWaddr fa:16:3e:41:03:42
inet6 addr: fd42:2c:5020:a00::1/64 Scope:Global
inet6 addr: fe80::f816:3eff:fe41:342/64 Scope:Link
inet6 addr: fe80:cafe:dead:beef::1/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:80 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:148 (148.0 B) TX bytes:9180 (9.1 KB)
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References
