I've got one LXC container that works just fine, but a 2nd one now is mis-behaving.

I've configured a static route for it, but it just won't define a gateway after sudo services networking restart or after a reboot now, or lxc-restart ..., same for the DNS servers. Just the IP gets set (which is defined in the LXC containers config file).

It can ping the default gateway (10.1.0.1) just fine, but just doesn't set the default gateway route or nameservers.

davidparks21@WebApp:~$ cat /etc/network/interfaces

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).



# The loopback network interface

auto lo

iface lo inet loopback



# The primary network interface

auto eth0

iface eth0 inet static

 address 10.1.3.10

 netmask 255.255.0.0

 broadcast 10.1.255.255

 gateway 10.1.0.1

 dns-nameservers 8.8.8.8

 dns-nameservers 8.8.4.4

davidparks21@WebApp:~$ route

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

10.1.0.0        *               255.255.0.0     U     0      0        0 eth0

lxc.network.type=veth

lxc.network.name=eth0

lxc.network.link=br0

lxc.network.ipv4 = 10.1.3.10/16

lxc.network.flags=up

lxc.rootfs = /var/lib/lxc/WebApp/rootfs

lxc.utsname = prodweb1

root@WebApp:/var/log# ifdown eth0 && ifup eth0

ifdown: interface eth0 not configured

RTNETLINK answers: File exists

Failed to bring up eth0.

Note: On the other LXC container that does work, this command succeeds.

Adding this note:

root@WebApp:/var/log# ethtool eth0

Settings for eth0:

        Supported ports: [ ]

        Supported link modes:   Not reported

        Supported pause frame use: No

        Supports auto-negotiation: No

        Advertised link modes:  Not reported

        Advertised pause frame use: No

        Advertised auto-negotiation: No

        Speed: 10000Mb/s

        Duplex: Full

        Port: Twisted Pair

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: off

        MDI-X: Unknown

        Link detected: yes

I think the question should really be, "why isn't eth0 getting configured when I reboot or run service networking restart"

root@WebApp:/var/log# ls /run/network/

ifstate  ifup.lo

root@WebApp:/var/log# ifconfig

eth0      Link encap:Ethernet  HWaddr ee:1d:b6:c7:8d:3d

          inet addr:10.1.3.10  Bcast:10.1.255.255  Mask:255.255.0.0

          inet6 addr: fe80::ec1d:b6ff:fec7:8d3d/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:196 errors:0 dropped:0 overruns:0 frame:0

          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:70482 (70.4 KB)  TX bytes:1174 (1.1 KB)



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:48 errors:0 dropped:0 overruns:0 frame:0

          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0

          RX bytes:3840 (3.8 KB)  TX bytes:3840 (3.8 KB)