Folks, I have built a new openstack using kolla-ansible with 2024.1 with OVN plugin. So far everything is working good. Today I have added a new compute node with SRIOV port and it turns out vm is not able to obtain IP from DHCP. With the same subnet if I create general vm then it works and obtains IP but with sriov port it doesn't work. If I assign IP static on the vm interface then my VM is able to ping the outside world. I have deployed many clouds with OVN and SRIOV and never had an issue so I never dig into any kind of troubleshooting. This is the first time I have seen this issue. I have checked port mapping etc and all looks good. In SRIOV case what is the flow of DHCP? does physical interface send DHCP request on wire or DHCP request route via OVN br-int bridge? How will handle that DHCP request? Following two SRIOV port I have created but they are not able to obtain IP address via dhcp (ovn-nb-db)[root@os-chn-ctrl03 /]# ovn-nbctl --no-leader-only find Logical_Switch_Port type=external _uuid : a274df3b-6967-4f73-91ff-8f6eb46f70e0 addresses : ["fa:16:3e:03:55:44 10.74.2.35"] dhcpv4_options : 7829902c-5cdf-49cf-b478-7b683669c726 dhcpv6_options : [] dynamic_addresses : [] enabled : true external_ids : {"neutron:cidrs"="10.74.2.35/23", "neutron:device_id"="f4b91945-32f9-4961-a2cf-26b408218e35", "neutron:device_owner"="compute:sriov", "neutron:mtu"="", "neutron:network_name"=neutron-87131346-90d6-48ca-a045-214ff02ee9c0, "neutron:port_capabilities"="rx;tx;sg;tso;gso;gro;rxvlan;txvlan;rxhash;txudptnl", "neutron:port_name"=my-sriov-port, "neutron:project_id"="0c4956dce56a4503878007355850a04a", "neutron:revision_number"="32", "neutron:security_group_ids"="0bd505e8-d086-4d72-8e56-b913a8672f08", "neutron:subnet_pool_addr_scope4"="", "neutron:subnet_pool_addr_scope6"="", "neutron:vnic_type"=direct} ha_chassis_group : 0c41026b-3b01-485e-908a-523202aefcf9 mirror_rules : [] name : "0cbe012e-902a-4503-91a2-191b5f4acac5" options : {} parent_name : [] port_security : ["fa:16:3e:03:55:44 10.74.2.35"] tag : [] tag_request : [] type : external up : true _uuid : 1b245b6d-b720-41cd-a09c-79dc7eab3149 addresses : ["fa:16:3e:d8:4b:ab 10.74.2.181"] dhcpv4_options : 7829902c-5cdf-49cf-b478-7b683669c726 dhcpv6_options : [] dynamic_addresses : [] enabled : true external_ids : {"neutron:cidrs"="10.74.2.181/23", "neutron:device_id"="ac767d12-cff0-484e-b014-f3e42160cd8c", "neutron:device_owner"="compute:sriov", "neutron:mtu"="", "neutron:network_name"=neutron-87131346-90d6-48ca-a045-214ff02ee9c0, "neutron:port_capabilities"="rx;tx;sg;tso;gso;gro;rxvlan;txvlan;rxhash;txudptnl", "neutron:port_name"=my-sriov-p1, "neutron:project_id"="0c4956dce56a4503878007355850a04a", "neutron:revision_number"="5", "neutron:security_group_ids"="0bd505e8-d086-4d72-8e56-b913a8672f08", "neutron:subnet_pool_addr_scope4"="", "neutron:subnet_pool_addr_scope6"="", "neutron:vnic_type"=direct} ha_chassis_group : 0c41026b-3b01-485e-908a-523202aefcf9 mirror_rules : [] name : "bdf9261c-5cfc-4df1-9c11-c8ec26535eef" options : {} parent_name : [] port_security : ["fa:16:3e:d8:4b:ab 10.74.2.181"] tag : [] tag_request : [] type : external up : true