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so, we´re setting up an UBUNTU 12.04 lts server at my office, and had it nice and running with our static IP. However, when we tried changing the IP for another one (just changing the /etc/network/interfaces file), we lost internet connection. When we tried to return to the previous IP, the problem persisted.

Here's the mentioned file:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address #this one is the ip that worked before

if I do an ifconfig, eth0 looks fine, but RX packets are all in 0, same as TX packets

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What's the output of route -n? –  chaos Oct 25 '13 at 17:11
Destination Gateway Genmask Flags Metrics Ref Use Iface –  SRudloff Oct 25 '13 at 18:36 - - - UG - 100 - 0 - 0 eth0 ________ - - - U - 0 - 0 - 0 - eth0 –  SRudloff Oct 25 '13 at 18:37

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