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2.5.2. ServiceMode

2.5.2. ServiceMode​

For ServiceMode SVCB RRs, if TargetName has the value ".", then the owner name of this record MUST be used as the effective TargetName. If the record has a wildcard owner name in the zone file, the recipient SHALL use the response's synthesized owner name as the effective TargetName.

Here, for example, "svc2.example.net" is the effective TargetName:

example.com.      7200  IN HTTPS 0 svc.example.net.
svc.example.net.  7200  IN CNAME svc2.example.net.
svc2.example.net. 7200  IN HTTPS 1 . port=8002
svc2.example.net. 300   IN A     192.0.2.2
svc2.example.net. 300   IN AAAA  2001:db8::2