IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready & IPv6: ADDRCONF(NETDEV_UP): xenbr2: link is not ready on Ubuntu Server - Xen bridge

Hi all,
I am having some problems getting a Xen bridge up in Ubuntu precise with Xen.
I created a first bridge on eth1 with no problems, but the exact same process for eth2 yields the following problems:

/etc/network/interfaces

auto xenbr1
iface xenbr1inet manual
bridge_ports eth1
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

auto xenbr2
iface xenbr2 inet manual
bridge_ports eth2
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

---

ifup xenbr2
Waiting for xenbr2 to get ready (MAXWAIT is 20 seconds).
ssh stop/waiting
ssh start/running, process 10377
(Takes quite a while)

---

dmesg | tail
[108513.254296] device eth2 entered promiscuous mode
[108513.390125] IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
[108513.410895] IPv6: ADDRCONF(NETDEV_UP): xenbr2: link is not ready

---

ifconfig eth2
eth2 Link encap:Ethernet direcciónHW 00:26:b9:46:61:1d

ACTIVO DIFUSIÓN MULTICAST MTU:1500 Métrica:1
Paquetes RX:0 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:0 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:1000
Bytes RX:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupción:16

---

I have tried adding the following lines to sysctl:

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

No joy there...

Does anyone know where I am messing up?
Cheers for the help!

Answer

It was a driver issue.
Compiled ethernet drivers from compat-drivers and it worked.
https://backports.wiki.kernel.org/index.php/Releases