commit 54f0d9edbf7f6ea6dd805dc77fdbf2c3848188e2
author Pierre Imai <imaipi@google.com> Mon Feb 08 16:01:40 2016 +0900
committer Pierre Imai <imaipi@google.com> Tue Feb 09 10:07:36 2016 +0900
tree 44d734c72203d263526ecc149aac8de069a82cf3
parent c7cf0dd77e61806b45c41c880b215ec36445bcd4

Silence the obnoxious MTU 0 error message that occur when no MTU is
specified for a given network.

Bug: 10705136
Change-Id: I637d3b62ca6bb3de217d1eb03cdb1668622d06f1

services/core/java/com/android/server/ConnectivityService.java

diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 4300920..5c7c697 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -1655,11 +1655,14 @@
     private void updateMtu(LinkProperties newLp, LinkProperties oldLp) {
         final String iface = newLp.getInterfaceName();
         final int mtu = newLp.getMtu();
+        if (oldLp == null && mtu == 0) {
+            // Silently ignore unset MTU value.
+            return;
+        }
         if (oldLp != null && newLp.isIdenticalMtu(oldLp)) {
             if (VDBG) log("identical MTU - not setting");
             return;
         }
-
         if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) {
             loge("Unexpected mtu value: " + mtu + ", " + iface);
             return;