update go.mod

go.mod

@@ -25,3 +25,11 @@ require (
 	golang.org/x/tools v0.1.8-0.20211022200916-316ba0b74098 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )
+
+require github.com/miekg/dns v1.1.50
+
+require (
+	golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985 // indirect
+	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
+	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
+)