I have tried the big and mega versions of 22118 and WiFi completely did not work (no signal detected using Android, nor Apple, nor Windows)

dd-wrt.v24-22118_NEWD-2_K2.6_mega-nv64k.bin (no WiFi)
dd-wrt.v24-22118_NEWD-2_K2.6_big-nv64k.bin (no WiFi)

After some research this is a well known bug for this version. I need Wifi working to be able to connect to it.