Get error ”/etc/sysconfig/network-scripts/ifdown-eth: line 69: echo: write error: Invalid argument“ when shutting down bonding device on RHEL6

Issue

• When we shutdown a bonding network interface, it may report an error message on the screen and arp_ip_target is not removed for the bonding interface.

• For example:

# service network stop
...
Shutting down interface bond0:  /etc/sysconfig/network-scripts/ifdown-eth: line 69: echo: write error: Invalid argument                                                           [  OK  ]
Shutting down loopback interface:                          [  OK  ]

# cat /sys/class/net/bond0/bonding/arp_ip_target
<arp ip target>

# cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
...
BONDING_OPTS="mode=1 arp_interval=100 arp_ip_target=<ip arp target>"