setting smart proxy variables

gistfile1.txt

$servername = $ipaddress_eth1

# Note: There is a bug in the Ubuntu DHCP directory locations - remove any references of '3' in these paths.
$dhcp           = true
$dhcp_interface = 'eth1'
$dhcp_reverse   = '56.168.192.in-addr.arpa'
$gateway        = '192.168.56.2'
$range          = '192.168.56.3 192.168.56.200'
   
# Enabling DNS is optional but recommended
$dns           = true
$dns_interface = 'eth1'
$dns_reverse   = '56.168.192.in-addr.arpa'
# You also need to include `Ubuntu` in the section that configures the rndc DNS key. Otherwise only `Debian` is supported and you will get errors.