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Re: Must _reboot_ to restart network

On Tue, 28 May 2013, låzaro wrote:


I haved taht problem too, solve it, purging net-tools and installing
again...


Thanks for the suggestion.
For some reason the problem has gone since I asked for help. So I wasn't able to test any of the suggested solutions. 
(That's why I delayed my response.)

Will report as soon as something happens.

Thanks,
Itay



Thread name: "Must _reboot_ to restart network"
Mail number: 1
Date: Tue, May 28, 2013
In reply to: Itay


Hi,

I started to have these problems since one of the recent upgrades.

Symptoms:
- Computer works fine for a day or so.
- Then network spontaneously disconnects.
- ifdown eth0 [1] and ifup eth0 [2] (as root) fail to restart the
network.
- Reboot solves the problem.
- All other computers on our LAN work just fine during the network
downtime on that computer

If it helps, see also [3] output of 'ifconfig -a',
taken while network is working fine.

I would appreciate any help to figure this out.

Thanks in advance,
Itay


[1]
gandalf:~# ifdown eth0
Internet Systems Consortium DHCP Client 4.1.1-P1
Copyright 2004-2010 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:26:18:72:71:14
Sending on   LPF/eth0/00:26:18:72:71:14
Sending on   Socket/fallback
DHCPRELEASE on eth0 to 10.0.0.138 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
Reloading /etc/samba/smb.conf: smbd only.

[2]
gandalf:~# ifup eth0
Internet Systems Consortium DHCP Client 4.1.1-P1
Copyright 2004-2010 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:26:18:72:71:14
Sending on   LPF/eth0/00:26:18:72:71:14
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

[3]
gandalf:~# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:26:18:72:71:14
          inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::226:18ff:fe72:7114/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:405 errors:0 dropped:0 overruns:0 frame:0
          TX packets:421 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:108436 (105.8 KiB)  TX bytes:54108 (52.8 KiB)
          Interrupt:20

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:156 errors:0 dropped:0 overruns:0 frame:0
          TX packets:156 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:9992 (9.7 KiB)  TX bytes:9992 (9.7 KiB)

pan0      Link encap:Ethernet  HWaddr e2:9f:16:0e:b6:2a
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)



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