Public bug reported:
The OVN driver supports the extra_dhcp_opts extension, however, it does
not validate any options passed to it leading to a lot of confusion. The
user can input any value and OVN will accept it via the API (retuning
200) but, internally it will just ignore that option if not supported.
E.g:
(overcloud) [stack@undercloud-0 ~]$ neutron port-update --extra-dhcp-opt
opt_name='interface-mtu',opt_value='1200' test_port
neutron CLI is deprecated and will be removed in the future. Use openstack CLI
instead.
Updated port: test_port
(overcloud) [stack@undercloud-0 ~]$ openstack port show test_port | grep -i dhcp
| extra_dhcp_opts | ip_version='4', opt_name='interface-mtu',
opt_value='1200'
()[root@controller-2 /]# ovn-nbctl list dhcp_options
a825bbdb-3de2-4cd2-aa75-11951894c087
_uuid : a825bbdb-3de2-4cd2-aa75-11951894c087
cidr : "192.168.30.0/24"
external_ids : {"neutron:revision_number"="0",
subnet_id="c35226d1-0984-4887-ad38-750c04fba350"}
options :
{classless_static_route="{169.254.169.254/32,192.168.30.2,
0.0.0.0/0,192.168.30.1}", dns_server="{172.16.0.1, 10.0.0.1}",
lease_time="43200", mtu="1442", router="192.168.30.1",
server_id="192.168.30.1", server_mac="fa:16:3e:95:ec:6f"}
** Affects: neutron
Importance: Medium
Assignee: Lucas Alvares Gomes (lucasagomes)
Status: Confirmed
** Tags: ovn
** Changed in: neutron
Importance: Undecided => High
** Changed in: neutron
Assignee: (unassigned) => Lucas Alvares Gomes (lucasagomes)
** Changed in: neutron
Status: New => Confirmed
** Tags added: ovn
** Changed in: neutron
Importance: High => Medium
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https://bugs.launchpad.net/bugs/1874282
Title:
[OVN] extra_dhcp_opts does not validate any options
Status in neutron:
Confirmed
Bug description:
The OVN driver supports the extra_dhcp_opts extension, however, it
does not validate any options passed to it leading to a lot of
confusion. The user can input any value and OVN will accept it via the
API (retuning 200) but, internally it will just ignore that option if
not supported.
E.g:
(overcloud) [stack@undercloud-0 ~]$ neutron port-update --extra-dhcp-opt
opt_name='interface-mtu',opt_value='1200' test_port
neutron CLI is deprecated and will be removed in the future. Use openstack
CLI instead.
Updated port: test_port
(overcloud) [stack@undercloud-0 ~]$ openstack port show test_port | grep -i
dhcp
| extra_dhcp_opts | ip_version='4', opt_name='interface-mtu',
opt_value='1200'
()[root@controller-2 /]# ovn-nbctl list dhcp_options
a825bbdb-3de2-4cd2-aa75-11951894c087
_uuid : a825bbdb-3de2-4cd2-aa75-11951894c087
cidr : "192.168.30.0/24"
external_ids : {"neutron:revision_number"="0",
subnet_id="c35226d1-0984-4887-ad38-750c04fba350"}
options :
{classless_static_route="{169.254.169.254/32,192.168.30.2,
0.0.0.0/0,192.168.30.1}", dns_server="{172.16.0.1, 10.0.0.1}",
lease_time="43200", mtu="1442", router="192.168.30.1",
server_id="192.168.30.1", server_mac="fa:16:3e:95:ec:6f"}
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