Suddenly no ipv4 address, only ipv6?!

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http://crunchbanglinux.org – We run a game server at my friends place appr 150 K:s away. The computer in question is an old laptop and it has been running latest stable Crunchbang very reliably for about a year now. The reason the server is run at my friend's house it's the fibre :) We have 100/100 Mbps and static IP :) Unfortunately my friend does not know anything about Linux./networking.. And now to the actual problem: The ISP changed the so called "home fibre terminal" at my friends house and then all the h*ll broke loose regarding our game server. It appears that for some strange reason ifconfig s (HowTos)