ifupdown: boot console says 'Failed to start Raise network interfaces' yet interface is up

[Rick Thomas <rbthomas@pobox.com>]

Anybody else seen this?  (Submitted as Bug#834376)

Updated to latest debian Sid

After boot is completed we see:

 rbthomas@sheeva:~$ systemctl status networking.service
 * networking.service - Raise network interfaces
    Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor preset: enabled)
   Drop-In: /run/systemd/generator/networking.service.d
            `-50-insserv.conf-$network.conf
    Active: failed (Result: exit-code) since Sun 2016-08-14 17:02:50 PDT; 39min ago
    Docs: man:interfaces(5)
  Main PID: 893 (code=exited, status=1/FAILURE)

 Aug 14 17:02:41 sheeva systemd[1]: Starting Raise network interfaces...
 Aug 14 17:02:46 sheeva ifup[893]: /sbin/ifup: waiting for lock on /run/network/ifstate.eth0
 Aug 14 17:02:49 sheeva ifup[893]: RTNETLINK answers: File exists
 Aug 14 17:02:49 sheeva ifup[893]: Failed to bring up eth0.
 Aug 14 17:02:50 sheeva systemd[1]: networking.service: Main process exited, code=exited, status=1/FAILURE
 Aug 14 17:02:50 sheeva systemd[1]: Failed to start Raise network interfaces.
 Aug 14 17:02:50 sheeva systemd[1]: networking.service: Unit entered failed state.
 Aug 14 17:02:50 sheeva systemd[1]: networking.service: Failed with result 'exit-code'.

However the interface *is* up:

 rbthomas@sheeva:~$ /sbin/ifconfig
 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
       inet 192.168.3.111  netmask 255.255.240.0  broadcast 192.168.15.255
       inet6 2001:1234:2d2:1:f2ad:4eff:fe00:3077  prefixlen 64  scopeid 0x0<global>
       inet6 fe80::f2ad:4eff:fe00:3077  prefixlen 64  scopeid 0x20<link>
       ether f0:ad:4e:00:30:77  txqueuelen 1000  (Ethernet)
       RX packets 6897  bytes 738138 (720.8 KiB)
       RX errors 0  dropped 0  overruns 0  frame 0
       TX packets 4556  bytes 427016 (417.0 KiB)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
       device interrupt 85  

 lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
       inet 127.0.0.1  netmask 255.0.0.0
       inet6 ::1  prefixlen 128  scopeid 0x10<host>
       loop  txqueuelen 1  (Local Loopback)
       RX packets 2  bytes 98 (98.0 B)
       RX errors 0  dropped 0  overruns 0  frame 0
       TX packets 2  bytes 98 (98.0 B)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


Here is a possibly relevant config file

--------- /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 eth0
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet static
	address 192.168.3.111
	netmask 255.255.240.000
	network 192.168.0.0
	broadcast 192.168.15.255
	gateway 192.168.1.1

iface eth0 inet6 static
       address 2001:1234:2d2:1:f2ad:4eff:fe00:3077
       netmask 64
--------- /etc/network/interfaces ------------