ETH0 no address ip with ifconfig

I’ve created a new LXC on debian jessie, but it doesn’t have an ipv4 address. When I connect to my LXC and do ifconfig:

eth0      Link encap:Ethernet  HWaddr blabla
          inet6 addr: blabla/64 Scope:Global
          inet6 addr: blabla/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:81 errors:0 dropped:0 overruns:0 frame:0
          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10368 (10.1 KiB)  TX bytes:9480 (9.2 KiB)

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:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

As you can see, I have no inet addr in the eth0. I’ve tried to restart the networking service, but nothing has changed. How can I get an address?

I even tried:

lxc test stop 
lxc network attach lxdbr0 test eth0 eth0
lxc config device set test eth0 ipv4.address 10.99.10.42
lxc start test

But nothing

Thanks

Service restart NetworkManager

Service restart network-manager