If you need to forward a port to device not on the device list. 1. Disconnect the device you want to forward to from network 2. Set another device to the IP you want in DHCP reservations and reboot it

I configured my alarm system for my Deco M5 Network. When listing the devices with "arp -a" it shows the mac address and the IP as present in the network. However it is not listed in among the devices