diff --git a/tstest/integration/integration_test.go b/tstest/integration/integration_test.go
index 481de57fd..f7c133f5c 100644
--- a/tstest/integration/integration_test.go
+++ b/tstest/integration/integration_test.go
@@ -1644,6 +1644,7 @@ func TestEncryptStateMigration(t *testing.T) {
 // relay between all 3 nodes, and "tailscale debug peer-relay-sessions" returns
 // expected values.
 func TestPeerRelayPing(t *testing.T) {
+	flakytest.Mark(t, "https://github.com/tailscale/tailscale/issues/17251")
 	tstest.Shard(t)
 	tstest.Parallel(t)