- The maximum value of a probe rto was not aligned with the

(configurable) infra-cache-max-rtt value. That could result in
  infra-keep-probing not working if an infra-cache-max-rtt value was chosen
  that was below 12000 ms. This fix still uses a default value of 12000
  ms for the probe but caps it to the infra-cache-max-rtt if that is
  lower.

testcode/unitmain.h

@@ -86,5 +86,7 @@ void zonemd_test(void);
 void tcpreuse_test(void);
 /** unit test for doq functions */
 void doq_test(void);
+/** unit test for infra cache functions */
+void infra_test(void);
 
 #endif /* TESTCODE_UNITMAIN_H */