Systemctl start networking Fehler

Fehler #0:
exception 'OMV\ExecException' with message 'Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; systemctl start networking 2>&1' with exit code '1': Job for networking.service failed because the control process exited with error code.
See "systemctl status networking.service" and "journalctl -xe" for details.' in /usr/share/php/openmediavault/system/process.inc:175
Stack trace:
#0 /usr/share/php/openmediavault/system/systemctl.inc(86): OMV\System\Process->execute(Array, 1)
#1 /usr/share/php/openmediavault/system/systemctl.inc(146): OMV\System\SystemCtl->exec('start', NULL, false)
#2 /usr/share/openmediavault/engined/module/networking.inc(44): OMV\System\SystemCtl->start()
#3 /usr/share/openmediavault/engined/rpc/config.inc(194): OMVModuleNetworking->startService()
#4 [internal function]: OMVRpcServiceConfig->applyChanges(Array, Array)
#5 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#6 /usr/share/php/openmediavault/rpc/serviceabstract.inc(150): OMV\Rpc\ServiceAbstract->callMethod('applyChanges', Array, Array)
#7 /usr/share/php/openmediavault/rpc/serviceabstract.inc(528): OMV\Rpc\ServiceAbstract->OMV\Rpc\{closure}('/tmp/bgstatus9J...', '/tmp/bgoutputi0...')
#8 /usr/share/php/openmediavault/rpc/serviceabstract.inc(151): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))
#9 /usr/share/openmediavault/engined/rpc/config.inc(213): OMV\Rpc\ServiceAbstract->callMethodBg('applyChanges', Array, Array)
#10 [internal function]: OMVRpcServiceConfig->applyChangesBg(Array, Array)
#11 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#12 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('applyChangesBg', Array, Array)
#13 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('Config', 'applyChangesBg', Array, Array, 1)
#14 {main}

journalctl -u networking.service
-- Logs begin at Di 2017-08-22 14:45:49 CEST, end at Fr 2017-08-25 19:16:40 CEST
Aug 22 14:46:19 NAS systemd[1]: Starting Raise network interfaces...
Aug 22 14:46:19 NAS ifup[1795]: /sbin/ifup: waiting for lock on /run/network/ifs
Aug 22 14:46:20 NAS ifup[1795]: RTNETLINK answers: File exists
Aug 22 14:46:20 NAS ifup[1795]: Failed to bring up eth0.
Aug 22 14:46:20 NAS systemd[1]: networking.service: Main process exited, code=ex
Aug 22 14:46:20 NAS systemd[1]: Failed to start Raise network interfaces.
Aug 22 14:46:20 NAS systemd[1]: networking.service: Unit entered failed state.
Aug 22 14:46:20 NAS systemd[1]: networking.service: Failed with result 'exit-cod
Aug 25 19:14:04 NAS systemd[1]: Starting Raise network interfaces...
Aug 25 19:14:04 NAS ifup[61147]: RTNETLINK answers: File exists
Aug 25 19:14:04 NAS ifup[61147]: Failed to bring up eth0.
Aug 25 19:14:04 NAS systemd[1]: networking.service: Main process exited, code=ex
Aug 25 19:14:04 NAS systemd[1]: Failed to start Raise network interfaces.
Aug 25 19:14:04 NAS systemd[1]: networking.service: Unit entered failed state.
Aug 25 19:14:04 NAS systemd[1]: networking.service: Failed with result 'exit-cod

cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback


# eth0 network interface
auto eth0
allow-hotplug eth0
iface eth0 inet static
    address 192.168.178.2
    gateway 192.168.178.1
    netmask 255.255.255.0
    post-up /sbin/ifconfig $IFACE mtu 1500
    dns-nameservers 192.168.178.1
    pre-down ethtool -s $IFACE wol g
iface eth0 inet6 manual
    pre-down ip -6 addr flush dev $IFACE