grep -oE '((1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])' /var/log/bwutils.log | sort | uniq | grep 172.16.10 | xargs -n1 ping -c 1
Be sure to modify the latter grep statement for your desired subnet.
grep -oE '((1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])' /var/log/bwutils.log | sort | uniq | grep 172.16.10 | xargs -n1 ping -c 1
Be sure to modify the latter grep statement for your desired subnet.