commit e477c862031613ca7bd05971bce05405638fb248
author Treehugger Robot <treehugger-gerrit@google.com> Tue Sep 05 04:50:00 2017 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Tue Sep 05 04:50:00 2017 +0000
tree 8d6ee6e3fd25fa17f91ad8b6ed8b20b160a49085
parent a9ac3414a215e41ac2e5298d0de1c670b9f5936d
parent d1383bd268946d0c54e50e981b7d5c2c85509df4

Merge "Increase the maximum exponential backoff for DNS64 queries."

config.c

diff --git a/config.c b/config.c
index b147868..2d7085b 100644
--- a/config.c
+++ b/config.c
@@ -180,8 +180,11 @@
     logmsg(ANDROID_LOG_WARN, "dns64_detection -- error, sleeping for %d seconds", backoff_sleep);
     sleep(backoff_sleep);
     backoff_sleep *= 2;
-    if(backoff_sleep >= 120) {
-      backoff_sleep = 120;
+    if(backoff_sleep >= 1800) {
+      // Scale down to one DNS query per half hour. Unnecessary DNS queries waste power, and the
+      // benefit is minimal (basically, only limited to the case where a network goes from IPv6-only
+      // to IPv6 with NAT64).
+      backoff_sleep = 1800;
     }
   }
 }