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Can't ifdown eth0 (main interface)

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http://unix.stackexchange.com – I can't ifdown an interface on a Debian 6.0.5 box; user@box:/etc/network$ sudo ifdown eth0 && sudo ifup eth0 ifdown: interface eth0 not configured SIOCADDRT: File exists Failed to bring up eth0. user@box:/etc/network$ cat interfaces auto lo iface lo inet loopback allow-hotplug eth0 allow-hotplug eth1 auto eth0 iface eth0 inet static address 10.0.0.1 netmask 255.255.255.0 gateway 10.0.0.254 auto eth1 iface eth1 inet manual I'm stumped. Any help would be greatly appreciated. Thank you. UPDATE As requested by marco; user@box:/etc/network/$ cat run/ifstate lo=lo eth1=eth1 (HowTos)

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Submitted by Songlist on 10/11/2012

Stories similar to Can't ifdown eth0 (main interface)

Hi All,

I have 2 NICs in my U9.04 Server box (eth0, eth1). After I added 2 virtual interfaces for each physical interface (eth0:1,eth0:2,eth1:1,eth1:2), the MAC addresses of all the interfaces have changed to that of eth0. Because eth1 was configured to be on my local network, I can't access the box remotely anymore.

On debian squeeze, I setup a bridge based on eth0.

I have debian hosts which are connected through trunk port on 5 different vlans. But this host respond to arp "who-has" requests of all of their differents ip.

my question is as simple as the title, i have a debian 6 , 2 NICs, 3 different subnets in a single interface, just like this:

auto eth0 iface eth0 inet static address 192.168.106.254 netmask 255.255.255.0

auto eth0:0 iface eth0:0 inet static address 172.19.221.81 netmask 255.255.255.248

auto eth0:1 iface eth0:1 inet static address 192.168.254.1 netmask 255.255.255.248

Debian Squeeze as a router 45 weeks 4 days ago

I'm trying to setup Debian Squeeze (ala Dreamplug) as a router.

I have 3 network cards installed in my ubuntu 10.04 server and I want to configure Internet sharing and file sharing on eth1 for wired users and wlan0 for wireless users.

Static ip: eth0: 192.168.1.1 eth1: 10.0.0.15 wlan0: 10.0.0.20

/etc/network/interfaces

# The loopback network interface auto lo iface lo inet loopback

# The primary network interface auto eth0 iface eth0 inet static address 19

Virtualbox FTP to host 9 weeks 19 hours ago

For testing purposes I installed virtualbox to simulate a linux(64 bit ubuntu) server.

I configured my network settings like this: Adapter 1: NAT Adapter 2: Host-only

with my etc/network/interfaces configured like this:

#loopback network interface auto lo iface lo inet loopback

# primary network interface auto eth0 iface eth0 inet dhcp

#the host-only network interface auto eth1 iface eth1 in

I have to gigabit network interfaces which I have bridged.

/etc/network/interfaces is:

auto lo iface lo inet loopback

# Set up interfaces manually, avoiding conflicts with, e.g., network manager iface eth0 inet manual

iface eth1 inet manual

# Bridge setup auto br0 iface br0 inet static bridge_ports eth0 eth1 address 192.168.88.2 broadcast 192.168.88.255 netmask 255.255.

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!