Home / server / Questions / 339989
Accepted
David Bullock
Asked: 2011-12-12 18:27:00 +0800 CST

Why does Debian squeeze forget its static IP address and seek a DHCP lease?

  • 772

Hi have a Debian Squeeze box with eth0 and eth1.

In /etc/network/interfaces is:

auto eth1
iface eth1 inet static
 address 10.1.2.208
 netmask 255.255.255.0
 gateway 10.1.2.1

But every 24 hours, eth1 loses its statically-assigned IP address, and fetches one from DHCP instead! Manually doing:

# ifup eth1 && ifdown eth1

puts it back to how it should be.

But why does it spontaneously break in the first place?!

networking debian dhcp debian-squeeze

2 Answers

  1. Best Answer

    Is dhcpcd/dhclient still running? It will refresh its DHCP address on the interface if you don't kill it.

    Also, did you configure Network Manager? That'll override the interfaces file. Get rid of it if you're not using it.

    • 9

  2. Try this:

    auto eth1
iface eth1 inet static
  address 10.1.2.208
  netmask 255.255.255.0
  gateway 10.1.2.1
  hwaddress ether mac_address_of_the_network_card_here

    For example:

    ...
  hwaddress ether 00:00:5e:00:53:b2
    • 0