OVN network setting a previously released IP to static

Freedom_Fury · May 21, 2025, 10:15am

I have a few instances running for a while using dynamic DHCP. I have since changed the settings on the oven network to exclude some IP addresses(ipv4.dhcp.ranges: 10.225.0.11-10.225.0.224) , which I want to reserve. When I try to set them to static, I get the error listed below. Any ideas how to work around this issue?

incus config device set container-name eth0 ipv4.address=10.225.0.2

More than one DNS record found for logical switch port

github.com/lxc/incus

internal/server/network/ovn/ovn_nb_actions.go

907f527d3


      
          	}).List(ctx, &dnsRecords)
          	if err != nil {
          		return "", "", nil, err
          	}
          
          	if len(dnsRecords) != 1 {
          		return "", "", nil, nil
          	}
          
          	if len(dnsRecords[0].Records) > 1 {
          		return "", "", nil, fmt.Errorf("More than one DNS record found for logical switch port")
          	}
          
          	var ips []net.IP
          	var dnsName string
          
          	for key, value := range dnsRecords[0].Records {
          		dnsName = key
          
          		for _, ipPart := range strings.Split(value, " ") {
          			ip := net.ParseIP(strings.TrimSpace(ipPart))

I get the same error message when removing the device from an instance.
As a workaround, I set the IP addresses at the operating system level and removed the DHCP settings. However, that leaves me with the problem of the DNS pointing to the IP address provided by the DHCP server.

Freedom_Fury · May 22, 2025, 8:29am

I ultimately figured out the problem. It seems that the DNS for these instances was previously set to something else entirely. I believe this is because when I initially set up the system it was using the default .incus domain.

sudo ovn-nbctl list DNS

_uuid               : 4e6d2165-cc29-4b88-8b2b-1bb80b9fd5c8
external_ids        : {incus_switch=incus-net54-ls-int, incus_switch_port=incus-net54-instance-5c1badc9-578f-4dfc-be5a-2dba782da39f-eth0}
options             : {}
records             : {ct-name-prd.incus="10.225.0.3", ct-name-prd.pro.stdsrv.com="10.225.0.12"}

sudo ovn-nbctl get DNS 4e6d2165-cc29-4b88-8b2b-1bb80b9fd5c8 records

{ct-name-prd.incus="10.225.0.3", ct-name-prd.pro.stdsrv.com="10.225.0.12"}

Finally, set the single record for the instance.

sudo ovn-nbctl set DNS 4e6d2165-cc29-4b88-8b2b-1bb80b9fd5c8 records={ct-name-prd.pro.stdsrv.com="10.225.0.12"}

incus config device set ct-name-prd eth0 ipv4.address=10.225.0.3