Is it listed when you go to the Shell and run the ifconfig command?
root@bart:~ # ifconfig | grep -i description description: WANTR (opt4) description: LAN (lan) description: LOL (opt5) description: GUEST (opt1) description: DMZ (opt2) description: WAN (wan) description: SOWG (opt3)
Maybe its related to this?https://forum.opnsense.org/index.php?topic=38704.msg192770#msg192770Regards,S.