I use ssh to connect a remote Linux device and assign IP address manually by ifconfig eth0 (I know ifconfig is depreciated and I should use ip instead). More or less each half an hour or so, the IP is deallocated and cause interruption to my remote connection. It happens even I assign the IP address by ip addr add dev eth0. I wonder if it is any setting related issue that deallocate an IP after a time later or it could be something to do with the hardware interface?

I don't have any setting about eth0 on /etc/network/interfaces

#auto eth0
#iface eth0 inet dhcp

EDIT: I use Ubuntu 12.04 and it does not have the network manager. It has WICD that handles the WiFi interface.

  • What OS are you talking about? Is there a network-manager-type service running (NetworkManager or wicd)? – Joseph R. Aug 1 '13 at 17:34
  • I updated the question – Angs Aug 1 '13 at 17:39
  • WICD is certainly a network-manager-type service. "Wicd is an open source wired and wireless network manager for Linux" Try disabling it completely (try /etc/init.d/wicd stop or something like that) and see if the problem persists. If it does not, WICD is doing something to your interface and you should go over its configuration with a fine-toothed comb. – a CVn Aug 1 '13 at 18:17

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