After flashing Tasmota into the Sonoff ZBBridge, it can become a affordable and lightweight zigbee2mqtt bridge or a ZHA hub for Home Assistant. The process isn’t that tricky apart from requiring 2 ground pin which some of the FTDI boards doesn’t provide, but it isn’t something a quick soldering or alligator clip wont fix.
Recently I fall back to using Asus Router as I wanted to try out WiFi 6(AX), but apparently quite a bit of people have wifi issue with this combination.
I tried a few options as well as sniffing the dhcp exchange, all appear normal however for some reason the devices are rejecting the reply from dhcpd.
Long story short, if you have issue with this combination, use the ipaddress1-4 command to force a static on the sonoff device itself.
IPAddress<x> Set networking IP (XXX.XXX.XXX.XXX) addresses
IPAddress1 = set device IP address
0.0.0.0 = use dynamic IP address (DHCP)
XXX.XXX.XXX.XXX = set static IP address
IPAddress2 = set gateway IP address
IPAddress3 = set subnet mask
IPAddress4 = set DNS server IP address
follow IPAddress commands with restart 1 to apply changes