When I need to access free wifi behind a paywall (get more time, more speed, more features...), I usually go `arp -a` and try to change my MAC address with one

When I need to access free wifi behind a paywall (get more time, more speed, more features...), I usually go `arp -a` and try to change my MAC address with one already present on the network, no reset needed. Works with hotels, airports, etc... Not very ethical though...