--- a/net/dns.lua	Thu Mar 28 12:52:55 2019 +0100
+++ b/net/dns.lua	Sat Apr 13 18:16:28 2019 +0200
@@ -704,6 +704,7 @@
 					end
 				end
 			end
+			resolv_conf:close();
 		end
 		if not self.server or #self.server == 0 then
 			-- TODO log warning about no nameservers, adding localhost as the default nameserver