diff --git a/tests/netinet_udp_test.cpp b/tests/netinet_udp_test.cpp
new file mode 100644
index 0000000..661458e
--- /dev/null
+++ b/tests/netinet_udp_test.cpp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <netinet/udp.h>
+
+#include <gtest/gtest.h>
+
+#if defined(__BIONIC__)
+  #define UDPHDR_USES_ANON_UNION
+#elif defined(__GLIBC_PREREQ)
+  #if __GLIBC_PREREQ(2, 18)
+    #define UDPHDR_USES_ANON_UNION
+  #endif
+#endif
+
+TEST(netinet_udp, compat) {
+#if defined(UDPHDR_USES_ANON_UNION)
+    static_assert(offsetof(udphdr, uh_sport) == offsetof(udphdr, source), "udphdr::source");
+    static_assert(offsetof(udphdr, uh_dport) == offsetof(udphdr, dest), "udphdr::dest");
+    static_assert(offsetof(udphdr, uh_ulen) == offsetof(udphdr, len), "udphdr::len");
+    static_assert(offsetof(udphdr, uh_sum) == offsetof(udphdr, check), "udphdr::check");
+
+    udphdr u;
+    u.uh_sport = 0x1111;
+    u.uh_dport = 0x2222;
+    u.uh_ulen = 0x3333;
+    u.uh_sum = 0x4444;
+    ASSERT_EQ(0x1111, u.source);
+    ASSERT_EQ(0x2222, u.dest);
+    ASSERT_EQ(0x3333, u.len);
+    ASSERT_EQ(0x4444, u.check);
+#endif
+}