$ sudo journalctl -u networking.service
-- Logs begin at Thu 2015-10-29 10:09:12 UTC, end at Thu 2015-10-29 10:10:57 UTC. --
Oct 29 10:09:28 localhost.localdomain systemd[585]: networking.service: Executing: /etc/init.d/networking start
Oct 29 10:09:32 localhost.localdomain networking[585]: #### grep output:
Oct 29 10:09:32 localhost.localdomain networking[585]: #### end
Oct 29 10:09:32 localhost.localdomain networking[585]: * Configuring network interfaces...
Oct 29 10:09:32 localhost.localdomain networking[585]: calling: settle
Oct 29 10:09:33 localhost.localdomain networking[585]: Reading directory /etc/network/interfaces.d
Oct 29 10:09:33 localhost.localdomain networking[585]: Parsing file /etc/network/interfaces.d/eth0
Oct 29 10:09:33 localhost.localdomain networking[585]: run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
Oct 29 10:09:33 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-pre-up.d/bridge
Oct 29 10:09:33 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
Oct 29 10:09:34 localhost.localdomain networking[585]: ip link set up dev lo 2>/dev/null
Oct 29 10:09:34 localhost.localdomain networking[585]: Configuring interface lo=lo (inet)
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-pre-up.d/bridge
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts --exit-on-error --verbose /etc/network/if-up.d
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/000resolvconf
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/openssh-server
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/upstart
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/wpasupplicant
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts --exit-on-error --verbose /etc/network/if-up.d
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/000resolvconf
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/openssh-server
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/upstart
Oct 29 10:09:34 localhost.localdomain networking[585]: run-parts: executing /etc/network/if-up.d/wpasupplicant
Oct 29 10:09:34 localhost.localdomain networking[585]: ...done.
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: Child 585 belongs to networking.service
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: Control process exited, code=exited status=0
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: Got final SIGCHLD for state start.
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: Changed start -> exited
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: Job networking.service/start finished, result=done
Oct 29 10:09:34 localhost.localdomain systemd[1]: Started LSB: Raise network interfaces..
Oct 29 10:09:34 localhost.localdomain systemd[1]: networking.service: cgroup is empty