I messed up my network configuration. Can anyone help me and copy the default /etc/network/interfaces?
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More about loopback : askubuntu.com/questions/247625/…– find_xCommented Oct 25, 2015 at 20:37
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4 Answers
For eth0 with dhcp:
# The loopback network interface
auto lo eth0
iface lo inet loopback
# The primary network interface
iface eth0 inet dhcp
For eth0 static:
# The loopback network interface
auto lo eth0
iface lo inet loopback
# The primary network interface
iface eth0 inet static
address 192.168.10.33
netmask 255.255.255.0
broadcast 192.168.10.255
network 192.168.10.0
gateway 192.168.10.254
dns-nameservers 192.168.10.254
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1So what do I do if mine has no primary network interface, just has iface lo inet loopback ?? Commented Mar 31, 2015 at 18:42
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You have to add a primary (dhcp OR static) adding the lines above– ptheoCommented Apr 1, 2015 at 19:04
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What if I don't add 'network' and 'broadcast' entries? Will the default to the reasonable values?– JohnyTexCommented Sep 27, 2018 at 9:12
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As reference, this answer shows how to find the network device name - as
eth0is no longer that common.– s3devCommented Jul 31, 2023 at 9:36
Mine looks like:
auto lo
iface lo inet loopback
Following the Debian network configuration page, if you're just using DHCP then all you need is something like:
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
Here are the default contents of /etc/network/interfaces:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
