started raet header
changed udp buffer
started fixing raet header format
Set maximum Uxd packet to 65535 as per max datagram size

Clean up error messages
Comment out initiate failure if fqdn not match
It still logs that not a match but allows handshake to succeed nonetheless
Merge remote-tracking branch 'upstream/develop' into sam_raet_28
Merge pull request #11356 from SmithSamuelM/sam_raet_28

Clean up and refactoring