test: attempt to fix resolved wait-online testcase

Fixes: #37430

diff --git a/test/units/TEST-75-RESOLVED.sh b/test/units/TEST-75-RESOLVED.sh
index 104747e8d13d992fa0cd705165339094a1e4a485..be3a90385dc553401f22a71f1f5de9a3fe4083a0 100755 (executable)
--- a/test/units/TEST-75-RESOLVED.sh
+++ b/test/units/TEST-75-RESOLVED.sh
@@ -1293,6 +1293,7 @@ testcase_15_wait_online_dns() {
 
     # Wait for the monitor to exit gracefully.
     timeout 10 bash -c "while systemctl --quiet is-active $unit; do sleep 0.5; done"
+    journalctl --sync
 
     # Check that a disconnect happened, and was handled.
     journalctl -b -u "$unit" --grep="DNS configuration monitor disconnected, reconnecting..." > /dev/null