It looks like you are reading some kind of configuration file. I would suggest using a primitive state machine, something like:

my $host;
while (<$fh>) {
    if (/^hostname/) {
        $host = new_host( $_ );
        next;
    };
    if ($host) {
        add_to_host( $host, $_ );
    };
};

sub new_host { ... }; # return id of new host section
sub add_to_host { ... }; # do whatever is needed

[download]

I don't know what the file format is, and what the code really should do, so I can't say what's in the two last subs. At least there's no recursion, and you can process as many hostnames as you want.

In reply to Re: Too much recursion by Dallaylaen
in thread Too much recursion by jrvd

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