When you open up the open up the multiplayer server list, Arma establishes around 1000 connections to random servers (game servers I guess). This process takes down my internet/router for some minutes, if I don't immidiately click on "Remote server" and enter the IP-adress by hand.
The solutions suggested in #21021 didn't work, except I didn't try buying a new router. Very funny. Haha.

Isn't it possible to host a server which fetches all the information from the gameservers and maybe compresses the data and then serve it to the clients? The "refresh server" would then be limited to a few selected servers in the list. {F25117}