tail -f /var/log/syslog | grep dhcp | grep 185.9.110.71
Apr 25 11:57:56 b0a881466n dhcpd: DHCPDISCOVER from 55:4e:20:01:00:00 via 185.9.110.71 Apr 25 11:57:57 b0a881466n dhcpd: DHCPOFFER on 10.135.8.221 to 55:4e:20:01:00:00 (iPhone-Roman) via 185.9.110.71 Apr 25 11:57:57 b0a881466n dhcpd: DHCPREQUEST for 10.135.8.221 (10.136.20.100) from 55:4e:20:01:00:00 (iPhone-Roman) via 185.9.110.71 Apr 25 11:57:57 b0a881466n dhcpd: DHCPACK on 10.135.8.221 to 55:4e:20:01:00:00 (iPhone-Roman) via 185.9.110.71