#!perl -w
use Net::OpenSSH;

my $ssh = Net::OpenSSH->new("hostname");

if (my $pid = fork) {
 # wait for children, do something
} elsif ($pid == 0) {
 exec "another_perl_script", $ssh->get_ctl_path;
}
__END__

another_perl_script:
#!perl -w

use Net::OpenSSH;

my $ssh = Net::OpenSSH->new($host_or_some_dummy_value,
                            ctl_path => $ARGV[0],
                            reuse_master => 1);

$ssh->system("remote command");