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Notes

When the KVM has multiple IP addresses (e.g., Ethernet and Wi‑Fi are both connected, or a VPN is active), H.264 video mode may fail due to an ICE error in a multi‑IP environment. You can fix this by restricting which network interface WebRTC uses.
  1. SSH into the KVM and run ifconfig to see interface names, for example:
root@blikvm(rw):~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.8  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::3609:81d9:30b1:858c  prefixlen 64  scopeid 0x20<link>
        inet6 2409:8a1e:7bd5:24a0:a75:9560:80e:7086  prefixlen 64  scopeid 0x0<global>
        ether d8:3a:dd:26:a8:1d  txqueuelen 1000  (Ethernet)
        RX packets 31424  bytes 4853302 (4.6 MiB)
        RX errors 0  dropped 4420  overruns 0  frame 0
        TX packets 56486  bytes 59463233 (56.7 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1257  bytes 162450 (158.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1257  bytes 162450 (158.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wg0: flags=209<UP,POINTOPOINT,RUNNING,NOARP>  mtu 1420
        inet 10.0.0.2  netmask 255.255.255.255  destination 10.0.0.2
        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 1000  (UNSPEC)
        RX packets 22796  bytes 3297976 (3.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 55462  bytes 57044224 (54.4 MiB)
        TX errors 8  dropped 0 overruns 0  carrier 0  collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.45  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 2409:8a1e:7bd5:24a0:d82e:28b5:f282:3ce2  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::63b:12f1:44bd:24f2  prefixlen 64  scopeid 0x20<link>
        ether d8:3a:dd:26:a8:1e  txqueuelen 1000  (Ethernet)
        RX packets 8506  bytes 516509 (504.4 KiB)
        RX errors 0  dropped 4406  overruns 0  frame 0
        TX packets 457  bytes 43843 (42.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  1. Run rw to remount the system read‑write, then edit nano /mnt/exec/release/lib/pi/janus_configs/janus.jcfg. Find the ice_ignore_list setting and configure it. In the example above the KVM has three interfaces; if you want WebRTC to use wg0, set:
ice_ignore_list = "eth0,wlan0"

  1. Restart the web service: systemctl restart kvmd-web.

  2. use ro to set system to readonly.