As the saying goes: "i used regex to solve my problem, now i have two problems"

but have you considered using regex to extract the specific fields you want?

^(\S+)\s+(WLAN\s+\d+)\s+(\S+)\s+(Infinity|(?:\d+ Days\s+\d+ hrs\s+\d+ mins\s+\d+ secs))\s+(.+)$