[root@localhost test]# systemctl status network.service -n 50
network.service - LSB: Bring up/down networking
	  Loaded: loaded (/etc/rc.d/init.d/network)
	  Active: active (running) since Fri, 2013-08-23 10:13:55 BST; 9min ago
	 Process: 1500 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)
	  CGroup: name=systemd:/system/network.service
		  ├ 1635 /sbin/ifplugd -I -b -i eth0
		  └ 1712 /sbin/ifplugd -I -b -i wlan0

Aug 23 10:13:54 localhost.localdomain ifplugd(eth0)[1635]: Using interface eth0/00:22:15:2F:8F:E4 with dr...PI)
Aug 23 10:13:54 localhost.localdomain ifplugd(eth0)[1635]: Using detection mode: SIOCETHTOOL
Aug 23 10:13:54 localhost.localdomain ifplugd(eth0)[1635]: Initialization complete, link beat not detected.
Aug 23 10:13:54 localhost.localdomain network[1500]: Bringing up interface eth0:  [  OK  ]
Aug 23 10:13:54 localhost.localdomain network[1500]: Bringing up interface wlan0:  Error for wireless req...) :
Aug 23 10:13:54 localhost.localdomain network[1500]: SET failed on device wlan0 ; Invalid argument.
Aug 23 10:13:55 localhost.localdomain network[1500]: ioctl[SIOCSIWENCODEEXT]: Invalid argument
Aug 23 10:13:55 localhost.localdomain network[1500]: ioctl[SIOCSIWENCODEEXT]: Invalid argument
Aug 23 10:13:55 localhost.localdomain ifplugd(wlan0)[1712]: ifplugd 0.28 initializing.
Aug 23 10:13:55 localhost.localdomain ifplugd(wlan0)[1712]: Using interface wlan0/00:22:43:31:BE:77 with ...a3)
Aug 23 10:13:55 localhost.localdomain ifplugd(wlan0)[1712]: Using detection mode: SIOCETHTOOL
Aug 23 10:13:55 localhost.localdomain ifplugd(wlan0)[1712]: Initialization complete, link beat not detected.
Aug 23 10:13:55 localhost.localdomain network[1500]: [  OK  ]
Aug 23 10:13:55 localhost.localdomain systemd[1]: Started LSB: Bring up/down networking.
Aug 23 10:13:56 localhost.localdomain ifplugd(wlan0)[1712]: Link beat detected.
Aug 23 10:13:57 localhost.localdomain ifplugd(wlan0)[1712]: Executing '/etc/ifplugd/ifplugd.action wlan0 up'.
Aug 23 10:13:59 localhost.localdomain dhclient[1848]: DHCPREQUEST on wlan0 to 255.255.255.255 port 67
Aug 23 10:13:59 localhost.localdomain dhclient[1848]: DHCPACK from 192.168.1.1
Aug 23 10:14:00 localhost.localdomain NET[2010]: /sbin/dhclient-script : updated /etc/resolv.conf
Aug 23 10:14:00 localhost.localdomain dhclient[1848]: bound to 192.168.1.5 -- renewal in 34836 seconds.
Aug 23 10:14:00 localhost.localdomain ifplugd(wlan0)[1712]: client: Determining IP information for wlan0....ne.
Aug 23 10:14:01 localhost.localdomain ifplugd(wlan0)[1712]: Program executed successfully.
Aug 23 10:20:42 localhost.localdomain ifplugd(wlan0)[1712]: Link beat lost.
Aug 23 10:20:48 localhost.localdomain ifplugd(wlan0)[1712]: Executing '/etc/ifplugd/ifplugd.action wlan0 down'.
Aug 23 10:20:51 localhost.localdomain ifplugd(wlan0)[1712]: Program executed successfully.
Aug 23 10:20:53 localhost.localdomain ifplugd(wlan0)[1712]: Link beat detected.
Aug 23 10:20:54 localhost.localdomain ifplugd(wlan0)[1712]: Link beat lost.
Aug 23 10:20:55 localhost.localdomain ifplugd(wlan0)[1712]: Link beat detected.
Aug 23 10:20:56 localhost.localdomain ifplugd(wlan0)[1712]: Executing '/etc/ifplugd/ifplugd.action wlan0 up'.
Aug 23 10:20:57 localhost.localdomain dhclient[4139]: DHCPREQUEST on wlan0 to 255.255.255.255 port 67
Aug 23 10:21:00 localhost.localdomain dhclient[4139]: DHCPREQUEST on wlan0 to 255.255.255.255 port 67
Aug 23 10:21:08 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in...l 3
Aug 23 10:21:11 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in...l 4
Aug 23 10:21:15 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in... 10
Aug 23 10:21:25 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in... 12
Aug 23 10:21:37 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in... 15
Aug 23 10:21:52 localhost.localdomain dhclient[4139]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 in... 17
Aug 23 10:22:05 localhost.localdomain dhclient[4139]: receive_packet failed on wlan0: Network is down
Aug 23 10:22:09 localhost.localdomain dhclient[4139]: No DHCPOFFERS received.
Aug 23 10:22:09 localhost.localdomain dhclient[4139]: Trying recorded lease 192.168.1.5
Aug 23 10:22:12 localhost.localdomain ifplugd(wlan0)[1712]: Killing child.
Aug 23 10:22:12 localhost.localdomain ifplugd(wlan0)[1712]: client: Determining IP information for wlan0....ta.
Aug 23 10:22:12 localhost.localdomain ifplugd(wlan0)[1712]: client: --- 192.168.1.1 ping statistics ---
Aug 23 10:22:12 localhost.localdomain ifplugd(wlan0)[1712]: client: 1 packets transmitted, 0 received, +1...0ms
Aug 23 10:22:12 localhost.localdomain ifplugd(wlan0)[1712]: Program execution failed, return value is 0.
Aug 23 10:22:13 localhost.localdomain ifplugd(wlan0)[1712]: Link beat lost.
Aug 23 10:22:18 localhost.localdomain ifplugd(wlan0)[1712]: SIGUSR1: Daemon suspended (#1)
Aug 23 10:22:18 localhost.localdomain ifplugd(wlan0)[1712]: SIGUSR2: Daemon resumed (#1)
Aug 23 10:22:19 localhost.localdomain ifplugd(wlan0)[1712]: Executing '/etc/ifplugd/ifplugd.action wlan0 down'.
Aug 23 10:22:20 localhost.localdomain ifplugd(wlan0)[1712]: Program executed successfully.
[root@localhost test]# 

