From 1c287f3c68264b2998dfbca98e8211f788a279fc Mon Sep 17 00:00:00 2001
From: Nayana Bidari <nybidari@google.com>
Date: Mon, 10 Jul 2023 12:56:41 -0700
Subject: [PATCH] Test to check setting IPV6_V6ONLY on datagram socket with
 IPV4 address fails.

PiperOrigin-RevId: 546955039
---
 test/syscalls/linux/socket_inet_loopback.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/syscalls/linux/socket_inet_loopback.cc b/test/syscalls/linux/socket_inet_loopback.cc
index 10ef1e702..1d8a2ccdb 100644
--- a/test/syscalls/linux/socket_inet_loopback.cc
+++ b/test/syscalls/linux/socket_inet_loopback.cc
@@ -2544,5 +2544,12 @@ TEST_F(SocketInetLoopbackTest, LoopbackAddressRangeConnect) {
   }
 }
 
+TEST_P(SocketInetLoopbackTest, UdpIPV6Only) {
+  TestAddress const& listener = V4Any();
+  auto fd = ASSERT_NO_ERRNO_AND_VALUE(Socket(listener.family(), SOCK_DGRAM, 0));
+  EXPECT_THAT(setsockopt(fd.get(), IPPROTO_IPV6, IPV6_V6ONLY, &kSockOptOn,
+                         sizeof(kSockOptOn)),
+              SyscallFailsWithErrno(ENOPROTOOPT));
+}
 }  // namespace testing
 }  // namespace gvisor