Get the IP address for a MAC address in LAN

Get IP address via LAN MAC address

[[email protected]cli]# Cat tmp.sh
function Get_all_arp_info ()
{
Ip-s-S neigh flush all >/dev/nul &
For IP in ' seq 2 254 '
Do
Ping 192.168.50. $ip-c1 >/dev/null &

Done
}
function From_mac_get_ip ()
{
Get_all_arp_info
Mac_addr=$1
if [[-N ' ip neigh |grep $MAC _addr ']];then
Ip_addr= ' IP neigh |grep $MAC _addr|awk ' {print '} '
echo "mac_addr= $MAC _addr ip_addr= $IP _addr"
Else
echo "Did match"
Fi
}
FROM_MAC_GET_IP $
[[email protected]cli]# SH tmp.sh 52:54:00:51:cd:8e
mac_addr=52:54:00:51:cd:8e ip_addr=192.168.50.191
[[email protected]cli]#

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Get the IP address for a MAC address in LAN