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There is a file in which I can set from what interfaces dhcp can provide ip and etc. there was a line like this interface = "eth0 eth1"

What is the file's name?

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closed as off topic by Wesley, voretaq7 Jul 18 '12 at 18:47

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This sort of basic question is better suited to AskUbuntu –  voretaq7 Jul 18 '12 at 18:47

2 Answers 2

The file you're looking for is: /etc/network/interfaces

You can find a reference for the structure of this file by taking a look at /usr/share/doc/ifupdown/examples/network-interfaces and also in the online manpage.

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I set static ip in interfaces. but in the file the was only one like interfaces="" –  Artem Tsarionov May 31 '12 at 0:02
    
What your answer is accurate, I suspect you are miss-understanding the question. I can understand why you might do that, it isn't entirely clear. –  Zoredache May 31 '12 at 1:57
    
@ArtemTsarionov could you please edit your question to be more clear as to what exactly you're trying to do? Are you trying to set up a DHCP server, or are you trying to set up a PC with a static/dynamic IP address? –  Richard Keller May 31 '12 at 9:13

Your question is a bit confusing, but allow me to but on my mind reading cap for a bit and make a few guesses.

I am guessing that you are running the ISC DHCPd server that comes as a package. It has several files related to the configuration and startup

  • /etc/dhcp3/dhcpd.conf : Main configuration file
  • /etc/init.d/dhcp3-server : Startup script
  • /etc/default/dhcp3-server : A bash fragment that that is sourced by the startup script.

An example /etc/default/dhcp3-server config file

# Defaults for dhcp initscript
# sourced by /etc/init.d/dhcp
# installed at /etc/default/dhcp3-server by the maintainer scripts

#
# This is a POSIX shell fragment
#

# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
#       Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACES="eth0"
#INTERFACES="eth1"
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