No network connectivity with 2 NICs -- Marvell 88E8056 sky2

[Simon McNair]

Clean install, machine has dual NICs. Both NICs are connected to the same Gigabit switch getting configured via DHCP with the same Ubuntu ISC DHCP server but with (obviously) different configurations.

There is no connectivity until I do an 'ifconfig down eth1' at which point the internet springs in to life.

If I then do an 'ifconfig up eth1' it remains working.

A logoff/on will produce the same results again.

I will try Internet connectivity from the console on a restart and see if the issue occurs without Gnome/network-manager (in the near future).

Regards
Simon

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Thu Jun 28 08:51:50 2012
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: This
IpRoute:
 default via 192.168.1.254 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.148 metric 1
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.149 metric 1
IwConfig:
 lo no wireless extensions.

 eth1 no wireless extensions.

 eth0 no wireless extensions.
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
RfKill:

SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 Wired connection 2 65059f71-097b-4718-a54f-50b17900020e 802-3-ethernet 1340869884 Thu 28 Jun 2012 08:51:24 BST yes no /org/freedesktop/NetworkManager/Settings/1
 Wired connection 1 cf793b68-1e59-4531-8c47-91fc361b84ec 802-3-ethernet 1340869884 Thu 28 Jun 2012 08:51:24 BST yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth1 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/1
 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.4.0 connected enabled enabled enabled enabled disabled

[Thomas Hood (jdthood)]

Here are some of the events reported in the syslog. First thing I don't like is the almost simultaneous calling of resolvconf and restarting of dnsmasq. I hope that these actions are serialized. Second, I wonder why the carrier is reported as OFF on eth1 four seconds after DHCP is complete.

Jun 28 08:36:23 Dave dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
Jun 28 08:36:23 Dave dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
Jun 28 08:36:24 Dave dhclient: DHCPACK of 192.168.1.149 from 192.168.1.1
Jun 28 08:36:24 Dave dhclient: DHCPACK of 192.168.1.148 from 192.168.1.1
Jun 28 08:36:25 Dave NetworkManager[1053]: <info> DNS: starting dnsmasq...
Jun 28 08:36:25 Dave NetworkManager[1053]: <info> (eth0): writing resolv.conf to /sbin/resolvconf
Jun 28 08:36:26 Dave NetworkManager[1053]: <info> DNS: starting dnsmasq...
Jun 28 08:36:26 Dave NetworkManager[1053]: <info> (eth1): writing resolv.conf to /sbin/resolvconf

Jun 28 08:41:48 Dave NetworkManager[1053]: <info> (eth1): carrier now OFF (device state 100, deferring action for 4 seconds)
Jun 28 08:41:48 Dave dhclient: receive_packet failed on eth1: Network is down
Jun 28 08:41:48 Dave kernel: [ 337.009033] sky2 0000:07:00.0: eth1: disabling interface

[Simon McNair (simonmcnair)]

As a FYI. I did some 'ifconfig eth0 up' and 'ifconfig eth0 down' at different places. It's hard to log a bug without internet connectivity so I frigged about until I got the log and internet connectivity.
Simon

[Simon McNair (simonmcnair)]

Sorry, eth1, not eth0...

[Simon McNair (simonmcnair)]

http://askubuntu.com/questions/150698/new-install-12-04-64bit-dual-nics-both-dhcp-no-route-until-one-card-disabled

[Thomas Hood (jdthood)]

Please reproduce the problem and run

    ip route show
    ls -l /etc/resolv.conf
    ls -l /run/resolvconf/interface
    cat /etc/resolv.conf

and post the output here.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]