Destination Unreachable (Network Unreachable) HELP PLEASE, Internet Disconnects

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http://serverfault.com – so i've been having this problem for awhile now some months, wasnt like this before. basicaly what happens is that the router turns the internett off whenever it feels like it, it seems like that at least. i've been digging so much around this problem but cannot find someone with the same issue. I have been using wireshark to see if i can see anything there, and i found that there is alot of messages that goes like "Who has 10.0.0.xx tell 10.0.0.xxx" and then out of that it becomes ICMP Destination Unreachable (network unreachable), then it shuts off the internet. then it comes back on 2-5 m (HowTos)