check.gst-rtsp-server.gst_client.test_scale_and_speed: Sometimes fails with Transport doesn't match pattern

https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/jobs/427006 which is probably the same

GST_REGISTRY='/builds/gstreamer/gst-plugins-bad/gst-build/build/subprojects/gst-rtsp-server/tests/check/gst/client.registry' GST_PLUGIN_LOADING_WHITELIST='gstreamer:gst-plugins-base:gst-plugins-good:gst-plugins-bad:gst-rtsp-server' GST_PLUGIN_PATH_1_0='/builds/gstreamer/gst-plugins-bad/gst-build/build' GST_CHECKS='test_scale_and_speed' CK_DEFAULT_TIMEOUT='120' GST_PLUGIN_SYSTEM_PATH_1_0='' GST_STATE_IGNORE_ELEMENTS='' /builds/gstreamer/gst-plugins-bad/gst-build/build/subprojects/gst-rtsp-server/tests/check/gst_client

gst_client output

Running suite(s): rtspclient
0%: Checks: 1, Failures: 1, Errors: 0
../subprojects/gst-rtsp-server/tests/check/gst/client.c:525:F:general:test_scale_and_speed:0: Transport 'RTP/AVP;multicast;destination=233.252.0.1;ttl=1;port=5002-5003;mode="PLAY"' doesn't match pattern '^RTP/AVP;multicast;destination=233.252.0.1;ttl=1;port=5000-5001;mode="PLAY"$'
Check suite rtspclient ran in 0.034s (tests failed: 1)

CC @meh