@rfuchs this commit has broken my use of `rtpengine_manage(DTLS=off)`. Now the key DTLS is not passed to rtpengine but hijacked to set transport.
Without DTLS=off rtpengine adds two lines to SDP a=setup:actpass a=fingerprint:xxxxxxxxxxxxxxxxxxxxxxxxxxx
This seems harmless, but FreeSWITCH expecting SDES fails. UACs based on PSJIP are working. I think that is why my kamailio scripts always had DTLS=off to make FreeSWITCH happy.