diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 724b25fa9e4..42761151992 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -7083,6 +7083,12 @@ dnl Checks the implementation of conntrack with FTP ALGs in combination with
 dnl NAT, using the provided flow table.
 m4_define([CHECK_FTP_NAT],
    [AT_SETUP([conntrack - FTP $1])
+    m4_if(m4_index([$1], [orig tuple]), -1, [], [
+      dnl 6.8.0-1014-azure #16~22.04.1-Ubuntu kernel in GitHub Actions
+      dnl contains a known conntrack bug, but doesn't have a fix for it:
+      dnl   a23ac973f67f ("openvswitch: get related ct labels from its master
+      dnl                  if it is not confirmed")
+      OVS_CHECK_GITHUB_ACTION()])
     AT_SKIP_IF([test $HAVE_FTP = no])
     AT_SKIP_IF([test $HAVE_LFTP = no])
     CHECK_CONNTRACK()