requirement
Click on the red underlined text to get to the source
... It MAY choose to run simultaneous DDDS resolutions for more than one
protocol, in which case the requirements above apply for each
protocol independently. That is, do not switch protocols mid-
...
... Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. ...
