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Generalize MX: that COOL SRV
COOL service in example.org
_cool._tcp.example.org SRV 0 0 5133 srv55.mega.example
_cool._tcp.example.org SRV 10 20 9876 srv33.mega.example.
_cool._tcp.example.org SRV 10 20 3456 srv44.mega.example.
_cool._tcp.example.org SRV 10 40 6738 srv66.mega.example.

“_” avoids conflicts with hostnames
Services need to be registered
currently under discussion: separate registry

this is not too good for local service location (-> tree climbing)
PPT Version