ipset: imp docs

internal/ipset/ipset_linux.go

@@ -77,6 +77,8 @@ func (qc *queryConn) listAll() (sets []props, err error) {
 		return nil, fmt.Errorf("marshaling netlink msg: %w", err)
 	}
 
+	// We assume it's OK to call a method of an unexported type
+	// [ipset.connector], since there is no negative effects.
 	ms, err := qc.Conn.Conn.Query(msg)
 	if err != nil {
 		return nil, fmt.Errorf("querying netlink msg: %w", err)