We were talking about this in the RT-AC86U 386 firmware but saw people with RT-AC68U devices starting to have the same issue and wanted to pop it out into it's own thread.
There is a new behavior with the 386 firmware that Guest Network 1 uses a different IP space from what you have defined on your main network.
Main Network = 192.168.1.xyz
Guest Network 1 = 192.168.101.xyz (2.4 GHz) and 192.168.102.xyz (5 GHz)
The problem is you can no longer define DHCP static leases for any device on...
ASUSWRT 386 new guest network IP space and DHCP static IPs
There is a new behavior with the 386 firmware that Guest Network 1 uses a different IP space from what you have defined on your main network.
Main Network = 192.168.1.xyz
Guest Network 1 = 192.168.101.xyz (2.4 GHz) and 192.168.102.xyz (5 GHz)
The problem is you can no longer define DHCP static leases for any device on...
ASUSWRT 386 new guest network IP space and DHCP static IPs