1. client laptop connect to wifi (cambium), can get ip and internet
2. same client he using phone to connect to wifi (cambium also same AP), can get ip and gateway, but cannot go internet
3. for the client that using phone to connect to the wifi broadcast by the same cambium AP, he cannot even ping to the gateway. (and as well as internet because he cannot get arp for the gateway)
4. only 2 cambium AP in network, and both connect to same dummy switch.
any kind of assistant are much appreciated !!