--- a/net/dns.lua	Thu Nov 30 19:35:35 2017 +0100
+++ b/net/dns.lua	Fri Dec 01 04:50:20 2017 +0100
@@ -390,7 +390,7 @@
 	end
 	addr = table.concat(addr, ":"):gsub("%f[%x]0+(%x)","%1");
 	local zeros = {};
-	for item in addr:gmatch(":[0:]+:") do
+	for item in addr:gmatch(":[0:]+:[0:]+:") do
 		table.insert(zeros, item)
 	end
 	if #zeros == 0 then