Interface vtnet1 is missing on FreeBSD host

[purpose-robot]

Hello there,

I have the following YAML file:

name: mdt

topology:
  nodes:
    host:
      kind: freebsd
      image: vrnetlab/freebsd_freebsd:14.2
    switch:
      kind: cisco_c8000v
      image: vrnetlab/cisco_c8000v:17.15.03a
      startup-config: switch.cfg
      env:
        CLAB_MGMT_PASSTHROUGH: "true"

  links:
    - endpoints: ["host:eth1", "switch:Gi2"]

I would like to connect the vtnet1 interface from the FreeBSD host with the GigabitEthernet2 interface from the Cisco Catalyst 8000v host, however once FreeBSD is booted, I only have vtnet0 and lo0 interfaces displayed in the CLI. I also tested it with the freebsd:13.4 image but with the same result.

admin@host:~ % ifconfig
vtnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=80028<VLAN_MTU,JUMBO_MTU,LINKSTATE>
        ether 0c:00:2a:f9:99:00
        inet 10.0.0.15 netmask 0xffffff00 broadcast 10.0.0.255
        media: Ethernet autoselect (10Gbase-T <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
        inet 127.0.0.1 netmask 0xff000000
        groups: lo
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
admin@host:~ %

I also tested the example lab from https://containerlab.dev/lab-examples/freebsd01 and there I have two additional interfaces vtnet1 and vtnet2 displayed like it should be.

I ran containerlab on Windows 11 and use Debian within WSL.

Linux DESKTOP-5NOSE6V 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun  5 18:30:46 UTC 2025 x86_64 GNU/Linux