Hi there!
Last week we had a problem that a cache peer's DNS resolved to 13 v6 and
13 v4 addresses but the system lacked IPv6 connectivity at all. While
debugging the problem (the solution was just to increase
forward_max_tries) I stumbled over a line in forward.cc where n_tries is
always checked against the constant value of 10 (which is the default
for forward_max_tries). At another line of code n_tries is checked
against the value for forward_max_tries from the configuration file.
The attached patch fixes the first line so that the check is also done
against the configured forward_max_tries value.
Greetings,
Matthias
--- src/forward.cc.orig Tue May 7 08:08:31 2013
+++ src/forward.cc Tue May 7 08:24:41 2013
@@ -514,7 +514,7 @@ FwdState::checkRetry()
if (!entry->isEmpty())
return false;
- if (n_tries > 10)
+ if (n_tries > Config.forward_max_tries)
return false;
if (origin_tries > 2)
