Skip ECN test for native/linux tests.

Skip check for ECN bits in native/linux tests. General advice
for the ECN field is to leave the setting to the kernel, so
behavior of the test is undefined for different kernels.

http://www.masterraghu.com/subjects/np/introduction/unix_network_programming_v1.3/ch07lev1sec6.html

PiperOrigin-RevId: 327451414

1 files changed, 2 insertions, 0 deletions

diff --git a/test/syscalls/linux/socket_ip_unbound.cc b/test/syscalls/linux/socket_ip_unbound.cc
index 1c7b0cf90..8f7ccc868 100644
--- a/test/syscalls/linux/socket_ip_unbound.cc
+++ b/test/syscalls/linux/socket_ip_unbound.cc
@@ -217,6 +217,8 @@ TEST_P(IPUnboundSocketTest, InvalidLargeTOS) {
 }
 
 TEST_P(IPUnboundSocketTest, CheckSkipECN) {
+  // Test is inconsistant on different kernels.
+  SKIP_IF(!IsRunningOnGvisor());
   auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
   int set = 0xFF;
   socklen_t set_sz = sizeof(set);