lo interface is down affter networking restart

zlobotron · 03-23-2014, 05:32 AM

OS: Debian Linux 2.6.26-2-amd64

Hello, all!!
After restart have a bunch of warnings like this:

Code:

/etc/init.d/networking restart
Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces ... (warning).
Reconfiguring network interfaces...if-up.d/mountnfs[eth0]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0]: waiting for interface eth1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:0]: waiting for interface eth1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:1]: waiting for interface eth1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth0:2]: waiting for interface eth1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[eth1]: waiting for interface eth1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface lo before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface eth0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface eth0:0 before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface eth0:1 before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface eth0:2 before doing NFS mounts ... (warning).
if-up.d/mountnfs[--all]: waiting for interface eth1 before doing NFS mounts ... (warning).

But all interfaces are up exept lo

Code:

 ip a sh
1: lo: <LOOPBACK> mtu 16436 qdisc noop state DOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:15:17:da:f7:70 brd ff:ff:ff:ff:ff:ff
    inet 172.16.4.18/29 brd 172.16.4.23 scope global eth0
    inet 10.254.253.20/29 brd 10.254.253.23 scope global eth0:0
    inet 192.168.83.5/32 brd 192.168.83.5 scope global eth0:1
    inet6 fe80::215:17ff:feda:f770/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:15:17:da:f7:71 brd ff:ff:ff:ff:ff:ff
    inet 192.168.4.22/24 brd 192.168.4.255 scope global eth1
    inet6 fe80::215:17ff:feda:f771/64 scope link
       valid_lft forever preferred_lft forever

Overcome it only with ifconfig lo down && ifconfig lo up

Need an advice what can cause such a strange situation.
I beleive this is my be because of some sysctl options, but don't know which exactly.
Your help will be very-very appreciated

Thank you!

evo2 · 03-23-2014, 08:47 PM

Hi,

did you see this warning?

Quote:

Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces ... (warning).

Why are you trying to "restart" the networking?

Also, what does the lo section of you interfaces file look like? Is it:

Code:

auto lo
iface lo inet loopback

?

Evo2.

zlobotron · 03-24-2014, 04:24 AM

Thank you for reply!
lo section in /etc/network/interfaces is as follows:

Code:

# The loopback network interface
auto lo
iface lo inet loopback

Yes I see that

Quote:

did you see this warning?
Quote:
Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces ... (warning).

but don’t know alternative if any?

Quote:

Why are you trying to "restart" the networking?

This is another long story

The original problem is that all interfaces are down after reboot.

Seems like networking is not starting at all? But it is presented in all default runlevels and i don't see that it is

Quote:

failed

during startup.
I found in bootlog this message:

Quote:

lo interface disabled privacy extensions

May this be a real cause of problem?

Any ideas are welcome!!

evo2 · 03-24-2014, 04:46 AM

Hi,

Quote:

Originally Posted by zlobotron

Thank you for reply!
lo section in /etc/network/interfaces is as follows:

Code:

# The loopback network interface
auto lo
iface lo inet loopback

Looks good to me.

Quote:

but don’t know alternative if any?

Code:

ifup lo
ifup eth0
ifup eth1

etc.

Quote:

This is another long story

The original problem is that all interfaces are down after reboot.

Now we're getting somewhere.

Quote:

Seems like networking is not starting at all? But it is presented in all default runlevels and i don't see that it is during startup.
I found in bootlog this message:
May this be a real cause of problem?

I imagine so.

Ok, is this a new problem? If so what else changed? Otherwise is this a new install, and can you post your whole interfaces file? Additionally have you been checking your log files to try to understand what is causing this? Since you suspect sysctl parameters, you might do well to post that configuration too.

Someone else might know exactly what is going on here, but I suspect most of us will need much more information if we are to really understand and solve this.

Cheers,

Evo2.