{
    my $openvpn = $DB->get('openvpn-bridge') || $DB->new_record('openvpn-bridge', {type => 'service'});
    my $start = $openvpn->prop('startPool') || '';
    my $end = $openvpn->prop('endPool') || '';
    
    # If start and end are define, we return an empty string
    return "" if ($start ne '' and $end ne '');

    # Else, we compute valid address

    $start = '0.0.0.10';
    $end = '0.0.0.30';

    $start =  esmith::util::IPquadToAddr($start);
    $end =  esmith::util::IPquadToAddr($end);
    my $netmask = esmith::util::IPquadToAddr($LocalNetmask);
    my $localnet = esmith::util::IPquadToAddr($LocalIP) & $netmask;

    # AND-out the host bits from the start and end ips.
    # And, OR our local network with our start and end host values.
    $start = $localnet | ($start & ~$netmask);
    $end = $localnet | ($end & ~$netmask);

    # Make sure that $start is less than $end (might not be if netmask has changed)
    if ($start > $end)
    {   
        my $temp = $start;
        $start = $end;
        $end = $temp;
    } 
    
    $openvpn->merge_props(startPool => esmith::util::IPaddrToQuad($start),
                        endPool => esmith::util::IPaddrToQuad($end));


}