Your program can be simplified to:
#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
################
my @AoH;
open my $fh, '<', 'interface.txt' or die "Cannot open 'interface.txt'
+because: $!";
while ( <$fh> ) {
if ( / ^ ( \w+ \d ) : \s+ flags= ( \S+ ) /x ) {
push @AoH, { interface => $1, flags => $2 };
}
elsif ( / ( ether | media | inet | status ) :? \s+ ( \S+ ) /x ) {
$AoH[ -1 ]{ $1 } = $2;
}
}
close $fh;
print Dumper \@AoH;
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