Before this patch,
Aug 18 01:00:58 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 01:30:59 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 02:01:01 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 02:31:03 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 03:01:04 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 03:31:05 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 04:01:06 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 04:31:08 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 05:01:09 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 05:31:11 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 06:01:11 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 06:31:12 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 07:01:14 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 07:31:15 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 08:01:16 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
Aug 18 08:31:16 amd64-n7 dhcpcd[250]: wm1: dhcp_sendudp: Invalid argument
This error message appeared ever 30 minutes, but it also disappeared
with this patch.