My laptop (Yosemite) is now 'PPPoE' connected over wifi, what is this and what does it mean?

My laptop (Yosemite) is now 'PPPoE' connected over wifi, what is this and what does it mean?

• Previously I was just connected by wifi (there was no mention of wifi)


• My AirPort base station connects to my cable-modem via PPPoE (using an ethernet cable)

Should I be worried? It seems to have happened since Yosemite.

Everything seems to be working fine, but I noticed this when I was recently tightening security on my AirPort.