My provider just changed the way i connect to the internet. Basically, they brought a bunch of fiber in my apartment building, they installed a huge switch at the entrance and from there they connected every apartment with utp directly to the PC. They told me to use PPPoE but i'm unable to make it work.

From what they tell me, i need to disable proxyARP from my router. Question is, how in God's name do i do that ? Thanks for your help.