I am trying to filter a table using the following awk code block.
#+BEGIN_SRC awk :stdin list-example :var fstcol=1 :var seccol=3 :results output org
  BEGIN {
  print "|Host|Result"
  print "|-"
  }
  $seccol ~ /[0-9]{1,3}(\.[0-9]\{1,3\}){3}/
  {
  print "|"$fstcol"|"$seccol
  }
#+END_SRC