Captive portal and multiple authentification
Who know, how to create authentification with MAC and IP together?
if (exist IP) and (exist MAC) then Login ok else Login failed
because by default
if (exist IP) or (exist MAC) then Login ok else Login failed
if you are cheking MAC & IP combination what is exacty the pint of it? Because normally the IP would be issigned rendomly to anyone unless you have staticly assigned IPs to the MACs but then you alredy know that the client is what it is because DHCP by itself cheks the MAC and gives it an IP
Well unless you want to fight agains spoofing in that way, but then it wont work too…
What do u want at the end?