Lost ethernet connectivity (SOLVED)

Linux Support
21

You can rename it if you like, but there’s no need … that’s only a label for the user.

and you’re welcome :slight_smile:

22

I may have marked this solved a little early

I was playing a podcast then suddenly the internet connection dropped out and I was back to the same problem, I deleted all the network connections and edited /etc/udev/rules.d/70-persistent-net.rules as previously instructed and it’s all back working again, the questions is for how long ???

Graeme

23

next time it happens, post the contents of

gedit /etc/udev/rules.d/70-persistent-net.rules

and the output from

ifconfig

and

sudo lshw -C network

before fixing it.

24

Ok the same thing has happened again as it stands I’ve had to enable WiFi to get online

# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.

# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1e:90:7d:5f:33", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1814:0x3062 (rt2800pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="c8:3a:35:c0:6d:57", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

graeme@Linux1 ~ $ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1e:90:7d:5f:33  
          inet addr:192.168.2.2  Bcast:192.255.255.255  Mask:255.0.0.0
          inet6 addr: fe80::21e:90ff:fe7d:5f33/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1277 errors:0 dropped:1 overruns:0 frame:0
          TX packets:1291 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:520897 (520.8 KB)  TX bytes:420923 (420.9 KB)

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:65536  Metric:1
          RX packets:2091 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2091 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:512800 (512.8 KB)  TX bytes:512800 (512.8 KB)

wlan0     Link encap:Ethernet  HWaddr c8:3a:35:c0:6d:57  
          inet addr:192.168.2.112  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::ca3a:35ff:fec0:6d57/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:55 errors:0 dropped:0 overruns:0 frame:0
          TX packets:127 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6815 (6.8 KB)  TX bytes:69914 (69.9 KB)

graeme@Linux1 ~ $ sudo lshw -C network
[sudo] password for graeme: 
  *-network               
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 01
       serial: 00:1e:90:7d:5f:33
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.2.2 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:40 ioport:d800(size=256) memory:feaff000-feafffff memory:feac0000-feadffff
  *-network
       description: Wireless interface
       product: RT3062 Wireless 802.11n 2T/2R
       vendor: Ralink corp.
       physical id: 3
       bus info: pci@0000:02:03.0
       logical name: wlan0
       version: 00
       serial: c8:3a:35:c0:6d:57
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=3.16.0-49-generic firmware=0.34 ip=192.168.2.112 latency=64 link=no maxlatency=4 mingnt=2 multicast=yes wireless=IEEE 802.11bgn
       resources: irq:20 memory:febf0000-febfffff
graeme@Linux1 ~ $

Many thanks

Graeme

25

I’m beginning to think there may be a problem with the ethernet card … have you got another you could swap it out with just as a test ?

[EDIT]

This time it’s not the MAC that changed, it appears to be the netmask has changed from 255.255.255.0 to 255.0.0.0

Setting a static IP might help…

26

Sorry it’s taken a while to get back to this but unfortunately replacing the ethernet card didn’t work so I tried replacing Network Manager with WICD, at first that didn’t solve the problem completely in as much as internet connectivity was still dropping out frequently and a full reboot was required to get it back but the connection to my network shares remained stable

The problem was finally solved by setting the DNS Server settings to opendns (208.67.222.222 & 208.67.220.220), that was a fortnight ago and I’ve never had a dropout since

Once again thanks for all the help

Graeme

27

Great stuff, and thanks for posting your solution.

Am I right in thinking you’re with Virgin ?

28
Am I right in thinking you're with Virgin ?

Yes you are and I have the not so super superhub

Graeme

29

Oh No :o :o :o :wink: