hi.
Can you try to determine a network driver vie lspci forexample? or dmesg?
After this can try to `modprobe -r DRIVERNAME && modprobe DRIVERNAME`.
This is must enough for you.
You can see a /var/log/messages for thelast messages before network is
down for diagnostic.
On 05/28/2013 04:21 PM, Itay wrote:
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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