diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 1edc536..6a26cd0 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -4470,17 +4470,24 @@
         int last = 0;
         for (InetAddress dns : dnses) {
             ++last;
-            String key = "net.dns" + last;
-            String value = dns.getHostAddress();
-            mSystemProperties.set(key, value);
+            setNetDnsProperty(last, dns.getHostAddress());
         }
         for (int i = last + 1; i <= mNumDnsEntries; ++i) {
-            String key = "net.dns" + i;
-            mSystemProperties.set(key, "");
+            setNetDnsProperty(i, "");
         }
         mNumDnsEntries = last;
     }
 
+    private void setNetDnsProperty(int which, String value) {
+        final String key = "net.dns" + which;
+        // Log and forget errors setting unsupported properties.
+        try {
+            mSystemProperties.set(key, value);
+        } catch (Exception e) {
+            Log.e(TAG, "Error setting unsupported net.dns property: ", e);
+        }
+    }
+
     private String getNetworkPermission(NetworkCapabilities nc) {
         // TODO: make these permission strings AIDL constants instead.
         if (!nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) {