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-rw-r--r--util/ip.lua6
1 files changed, 5 insertions, 1 deletions
diff --git a/util/ip.lua b/util/ip.lua
index 9dd6184f..ebeaf1c0 100644
--- a/util/ip.lua
+++ b/util/ip.lua
@@ -12,7 +12,11 @@ local ip_methods = {};
local ip_mt = {
__index = function (ip, key)
- return ip_methods[key](ip);
+ local method = ip_methods[key];
+ if not method then return nil; end
+ local ret = method(ip);
+ ip[key] = ret;
+ return ret;
end,
__tostring = function (ip) return ip.addr; end,
__eq = function (ipA, ipB) return ipA.addr == ipB.addr; end