upgrade to 10.4 and 2nd network interface does not auto start

stan stanb at panix.com
Sat Jun 19 13:57:20 UTC 2010


On Fri, Jun 18, 2010 at 03:29:42PM -0700, NoOp wrote:
> On 06/18/2010 03:19 PM, stan wrote:
> > On Fri, Jun 18, 2010 at 01:22:11PM -0700, NoOp wrote:
> >> On 06/18/2010 10:59 AM, stan wrote:
> >> > On Fri, Jun 18, 2010 at 12:37:28PM -0500, Tom Browder wrote:
> >> >> On Fri, Jun 18, 2010 at 07:10, stan <stanb at panix.com> wrote:
> >> >> > I just upgraded a machine from 9.04 to 10.04 and now the 2nd network
> >> >> > interface s not brought up, when I boot the machine. If I manually run
> >> >> > /etc/init.d/networking restart, after the machine is up, ?it comes up.
> >> >> > Both interfaces are hardwired.
> >> >> 
> >> >> I solved all my network problems by installing wicd and removing
> >> >> network manager (in that order).
> >> > 
> >> > Since this machine is a fixed installation, and simply has 2 dedicated
> >> > hardwired networks, is there any danger in simply uninstalling network
> >> > manager?
> >> 
> >> I have a test 10.04 machine with two nic's - both use a fixed IP address
> >> (same one actually). I normally use wicd, but because it's a test
> >> machine I am using NM. Both are configured as 'Manual' in NM. If I bring
> >> up the machine with eth0 plugged into the network, that one is
> >> connected. If I unplug and plug into eth1, that one is selected and
> >> working. If I bring up the machine with eth1 plugged in, that one is
> >> brought up & working, etc.
> >> 
> >> Now, as a test, I just changed the IP address on eth0 and plugged in
> >> another cable; both interfaces are up and showing their proper IP's. VNC
> >> into the machine...
> >> $ ifconfig
> >> eth0      Link encap:Ethernet  HWaddr [snipped]
> >>           inet addr:192.168.4.107  Bcast:192.168.4.255
> >> 
> >> eth1      Link encap:Ethernet  HWaddr [snipped]
> >>           inet addr:192.168.4.104  Bcast:192.168.4.255
> >> 
> >> 
> >> $ cat /etc/network/interfaces
> >> auto lo
> >> iface lo inet loopback
> >> 
> >> auto eth1
> >> 
> >> auto eth0
> >> 
> >> As you can see there are not fixed IP entries in
> >> /etc/network/interfaces. Connection information appears to be in
> >> /etc/NetworkManger/system-connections (protected).
> >> 
> >> With that configuration (different fixed IP's & two network cables
> >> plugged in) I rebooted to see if both nics come up simultaneously: they
> >> do, both are up and running properly.
> >> 
> > 
> > So, let me see if I understand. Are you saying I need to set the
> > configuration up in 
> > /etc/NetworkManger/system-connections (protected).
> > iinstead if
> > /etc/network/interfaces ?
> > 
> 
> No. I'm saying you need to remove all except what I've shown you in
> /etc/network/interfaces and setup profiles for both Auto eth0 and Auto
> eth1 in Network Manager (Wired).

Ok, I will try it Monday, when I get back to work. I think my interfaces
file looks like your example. I posted it in the original post.
-- 
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?




More information about the ubuntu-users mailing list