Description of problem:
exit code on wrong parameter is zero

Version-Release number of selected component (if applicable):
net-tools-2.0-0.18.20131004git.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. zero exit code for wrong usage:

[0 root@qeos-196 ~]# nameif aaaa
usage: nameif [-c configurationfile] [-s] {ifname macaddress}
[0 root@qeos-196 ~]# echo $?
0

2. there are more tools returning ZERO, I tried
bin wrongoption
bin --wrongoption

############## BUG
/bin/netstat wrongoption
usage: netstat [-vWeenNcCF] [<Af>] -r         netstat {-V|--version|-h|--help}
       netstat [-vWnNcaeol] [<Socket> ...]
.......snip........
    netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) 
    x25 (CCITT X.25) 
############## BUG
/sbin/arp --wrongoption
/sbin/arp: unrecognized option '--wrongoption'
Usage:
.......snip........
    irda (IrLAP) x25 (generic X.25) infiniband (InfiniBand) 
    eui64 (Generic EUI-64) 
############## BUG
/sbin/ipmaddr wrongoption
Usage: ipmaddr [ add | del ] MULTIADDR dev STRING
       ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]
.......snip........
       ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]
       ipmaddr -V | -version
############## BUG
/sbin/ipmaddr --wrongoption
Usage: ipmaddr [ add | del ] MULTIADDR dev STRING
       ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]
.......snip........
       ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]
       ipmaddr -V | -version
############## BUG
/sbin/iptunnel wrongoption
Usage: iptunnel { add | change | del | show } [ NAME ]
          [ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ]
.......snip........
       TTL  := { 1..255 | inherit }
       KEY  := { DOTTED_QUAD | NUMBER }
############## BUG
/sbin/iptunnel --wrongoption
Usage: iptunnel { add | change | del | show } [ NAME ]
          [ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ]
.......snip........
       TTL  := { 1..255 | inherit }
       KEY  := { DOTTED_QUAD | NUMBER }
############## BUG
/sbin/nameif wrongoption
usage: nameif [-c configurationfile] [-s] {ifname macaddress}
.......snip........
usage: nameif [-c configurationfile] [-s] {ifname macaddress}
############## BUG
/sbin/nameif --wrongoption
/sbin/nameif: unrecognized option '--wrongoption'
usage: nameif [-c configurationfile] [-s] {ifname macaddress}
.......snip........
/sbin/nameif: unrecognized option '--wrongoption'
usage: nameif [-c configurationfile] [-s] {ifname macaddress}
############## BUG
/sbin/plipconfig --wrongoption
Usage: plipconfig interface [nibble NN] [trigger NN]
       plipconfig -V | --version
.......snip........
       plipconfig -V | --version
       plipconfig -h | --help
############## BUG
/sbin/route wrongoption
Usage: route [-nNvee] [-FC] [<AF>]           List kernel routing tables
       route [-v] [-FC] {add|del|flush} ...  Modify routing table for AF.
.......snip........
    netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) 
    x25 (CCITT X.25) 
############## BUG
/sbin/route --wrongoption
/sbin/route: unrecognized option '--wrongoption'
Usage: route [-nNvee] [-FC] [<AF>]           List kernel routing tables
.......snip........
    netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) 
    x25 (CCITT X.25) 
############## BUG
/sbin/slattach --wrongoption
Usage: slattach [-ehlLmnqv] [-k keepalive] [-o outfill] [-c cmd] [-s speed] [-p protocol] tty | -
       slattach -V | --version
.......snip........
Usage: slattach [-ehlLmnqv] [-k keepalive] [-o outfill] [-c cmd] [-s speed] [-p protocol] tty | -
       slattach -V | --version





Actual results:
return code is zero

Expected results:
return code shouldn't be zero

Additional info:
see bug 1257549
-----------

TEST:

[0 root@qeos-196 ~]# cat  /tmp/test.sh
#!/bin/bash
log=$(mktemp)
for bin in $(rpm -ql net-tools | grep bin);do
	for option in wrongoption --wrongoption;do
		$bin $option &> $log
		if [ $? -eq 0 ];then
			echo  '############## BUG'
			echo "$bin $option"
			head -n2 $log
			echo '.......snip........'
			tail -n2 $log
		fi
	done
done