networking hosed after upgrading to 10.04

[scar]

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compdoc @ 05/31/2011 11:13 AM:
>  >eth0 has always been setup as DHCP and has
>> always have IP address of 192.168.1.139
> 
> Can you ping 192.168.1.1?
> 
> I have two qemu-kvm servers and your /etc/network/interfaces file is almost
> the same as mine. Main difference is, I use separate nics for the bridges.
> But its ok to use just one nic.
> 
> Does the VM obtain an ip address?

guys, i've kind of made some progress, but still need some fine-tuning.

after removing NM, i was still bothered that 'service networking
restart' was producing the 'Unknown instance' error.  i found that i
instead had to use '/etc/init.d/networking restart'.  i thought that
upstart had replaced the init.d scripts?

so, when i ran that, it said i needed to change ifupdown=false in
nm-system-settings.conf, so i did.  then i restarted networking again
using the init.d script and lo and behold i can access the internet.
now ifconfig is not listing an IP address for eth0 but it still has one
for br0 which seems strange to me.

also, upon rebooting the system, networking doesn't seem to work until i
restart it with the init.d script.  i noticed that, before i restarted
networking, both eth0 and br0 had an IP address of 192.168.1.139.

my VM grabs an IP address but i noticed it is something like
192.168.122.X which seems to correspond to the vibr0 interface, although
i had thought that, by setting up a bridge, it was supposed to obtain an
address on the same local networking, i.e. 192.168.1.X.  however, my VM
can also access the internet fine.

like i said there still seems to be some fine tuning needed.


output after restarting networking:

$ ifconfig
br0       Link encap:Ethernet  HWaddr 00:24:8c:66:d9:b5
          inet addr:192.168.1.139  Bcast:192.168.1.255  Mask:255.255.254.0
          inet6 addr: fe80::224:8cff:fe66:d9b5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1761 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1645 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1309435 (1.3 MB)  TX bytes:815434 (815.4 KB)

eth0      Link encap:Ethernet  HWaddr 00:24:8c:66:d9:b5
          inet6 addr: fe80::224:8cff:fe66:d9b5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2060 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1958 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1360132 (1.3 MB)  TX bytes:844769 (844.7 KB)
          Interrupt:28 Base address:0xc000

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:231 errors:0 dropped:0 overruns:0 frame:0
          TX packets:231 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:19383 (19.3 KB)  TX bytes:19383 (19.3 KB)

virbr0    Link encap:Ethernet  HWaddr aa:8f:bc:d2:ea:51
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          inet6 addr: fe80::a88f:bcff:fed2:ea51/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:87 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:12519 (12.5 KB)
$

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