diff --git a/core/java/android/net/IpSecManager.java b/core/java/android/net/IpSecManager.java
index d4c3edc..889e9bc 100644
--- a/core/java/android/net/IpSecManager.java
+++ b/core/java/android/net/IpSecManager.java
@@ -941,7 +941,8 @@
             throw new IllegalArgumentException(sse);
         } else if (sse.errorCode == OsConstants.EAGAIN) {
             throw new IllegalStateException(sse);
-        } else if (sse.errorCode == OsConstants.EOPNOTSUPP) {
+        } else if (sse.errorCode == OsConstants.EOPNOTSUPP
+                || sse.errorCode == OsConstants.EPROTONOSUPPORT) {
             throw new UnsupportedOperationException(sse);
         }
     }