Meta-data interface not brought up if PUBINTERFACE is vlan

[Mathias Gug]

If VNET_PUBINTERFACE is set to eth0.3251 for example (case where vlan are used), the meta-data service is not brought up:

ubuntu@mabolo:/var/log/eucalyptus$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:25:b3:e2:7a:30
          inet addr:10.55.55.5 Bcast:10.55.55.255 Mask:255.255.255.0
          inet6 addr: fe80::225:b3ff:fee2:7a30/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:26959 errors:0 dropped:0 overruns:0 frame:0
          TX packets:30326 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:11316671 (11.3 MB) TX bytes:14812631 (14.8 MB)
          Interrupt:16 Memory:f4000000-f4012800

eth0.3251 Link encap:Ethernet HWaddr 00:25:b3:e2:7a:30
          inet addr:10.55.51.3 Bcast:10.55.51.255 Mask:255.255.255.0
          inet6 addr: fe80::225:b3ff:fee2:7a30/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:17526 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17141 errors:0 dropped:5 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6731017 (6.7 MB) TX bytes:8815255 (8.8 MB)

eth0.3252 Link encap:Ethernet HWaddr 00:25:b3:e2:7a:30
          inet addr:10.55.52.2 Bcast:10.55.52.255 Mask:255.255.255.0
          inet6 addr: fe80::225:b3ff:fee2:7a30/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:3876 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4186 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1950614 (1.9 MB) TX bytes:1748014 (1.7 MB)

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:110 errors:0 dropped:0 overruns:0 frame:0
          TX packets:110 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:9176 (9.1 KB) TX bytes:9176 (9.1 KB)