tests: Try harder to figure out whether IPv6 is supported.

Until now, the tests have tried to create an IPv6 socket to figure out whether the system under test supports IPv6. Recently we've seen test failures on Travis which appear to be because, although the system supports IPv6, test programs are not allowed to connect or bind IPv6 addresses. This commit refines the test for IPv6 to also try to bind the IPv6 localhost address, which should convert the test failures to "skip"s. Acked-by: William Tu <[email protected]> Reviewed-by: Greg Rose <[email protected]> Tested-at: https://travis-ci.org/gvrose8192/ovs-experimental Reported-at: travis-ci/travis-ci#8711 Signed-off-by: Ben Pfaff <[email protected]>
dkarhi · Nov 14, 2017 · 1f3c6b2 · 1f3c6b2
1 parent b0bf5ef
commit 1f3c6b2
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/tests/atlocal.in b/tests/atlocal.in
@@ -108,7 +108,12 @@ FreeBSD|NetBSD)
 esac
 
 # Check whether to run IPv6 tests.
-if perl -e 'use Socket; socket(FH, PF_INET6, SOCK_STREAM, 0) || exit 1;'; then
+if perl -e '
+    use Socket qw(PF_INET6 SOCK_STREAM pack_sockaddr_in6 IN6ADDR_LOOPBACK);
+
+    socket(S, PF_INET6, SOCK_STREAM, 0) || exit 1;
+    bind(S, pack_sockaddr_in6(0, IN6ADDR_LOOPBACK)) || exit 1;
+'; then
     HAVE_IPV6=yes
 else
     HAVE_IPV6=no