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while (<>) {
    ....
}

cat /tmp/corpus.txt | perl -le '$_ = join("", <>); \
  print $& if /CONNAME\((\d{1,3}(\.\d{1,3}){3})\)\s*CURRENT\s*CHL/;'

CONNAME(163.231.99.129)                 CURRENT
    CHL

my $corpus = join("", <>);
print $& 
  if $corpus =~ /CONNAME\((\d{1,3}(\.\d{1,3}){3})\)\s*CURRENT\s*CHL/;