공유기 게이트웨이 확인법
https://m16.me/index.php?mid=QnA&page=1&category=2688402&document_srl=7901963
iptime
https://m.blog.naver.com/lizardftr/220904631894
LG U+
https://freeroute.tistory.com/40
KT
https://m16.me/index.php?mid=QnA&page=1&category=2688402&document_srl=7902146
SKT
그럼 힘내라구!