My syslog is full of this lines. What are they and how can i fix it if it's a problem?
DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:22:56 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:24:11 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:24:11 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:26:07 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:26:07 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:27:25 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:27:25 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:28:40 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:28:40 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:29:44 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:29:44 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:31:27 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:31:27 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:32:30 2017 daemon.info dnsmasq-dhcp[2235]: DHCPINFORM(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb
Fri Jun 23 13:32:30 2017 daemon.info dnsmasq-dhcp[2235]: DHCPACK(br-lan) 10.0.0.186 20:cf:30:c0:c1:bb