As I understand your description, you want to match once, not multiple times. The expression either passes or fails, in entirety. You don't want /g. You want an anchor and a quantifier. 
^
(?: ## added this
  (?:int)\s+(\w+)\s*?\n
  (?:\s*Number\sof\sFlaps:\s(\d+)\s*?\n)?
  (?:\s*IP\sAddress:?\s([\d\.]+)\s*?\n)?
)+\Z ## changed your last line

[download]
This will match one or more repetitions of your int/Flaps/Address pattern followed by the end of the string.
Caution: Contents may have been coded under pressure.

In reply to Re: Making regex /g match continuously by Roy Johnson
in thread Making regex /g match continuously by scottb

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