(OK) shell script—Find a Rogue DHCP Server—tcpdump/dhclient—nmap

# . find_rogue_dhcp.sh &

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				#! /bin/sh
				# tcpdump -i enp13s0 -nev udp port 68 >> /tmp/rogue 2>&1 &
				# touch /tmp/rogue_dhcp_ip
				# . find_rogue_dhcp.sh &

				while true
				do
				echo > /tmp/rogue
				dhclient -r
				dhclient >/dev/null 2>&1
				sleep 2
				grep '192.168' /tmp/rogue >> /tmp/rogue_dhcp_ip
				done

<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>

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