Technical data

4. Packages

Example: DNS_AUTHORITATIVE_IPADDR='IP_NET_2_IPADDR'

DNS_ZONE_NETWORK_N DNS_ZONE_NETWORK_x Specify the network addresses

here for which the dnsmasq should resolve names authoritatively. Both forward (name

to address) and reverse lookup (address to name) will work.

A complete example:

DNS_AUTHORITATIVE='yes'

DNS_AUTHORITATIVE_NS='fli4l.noip.me'

DNS_AUTHORITATIVE_IPADDR='IP_NET_2_IPADDR' # Uplink connected to eth1

DNS_ZONE_NETWORK_N='1'

DNS_ZONE_NETWORK_1='2001:db8:11:22::/64' # local IPv6-LAN

It is assumed here that “2001:db8:11::/48” is a IPv6 preﬁx publicly routed to ﬂi4l and

that subnet 22 was chosen for the LAN.

DNS Zone Delegation

DNS_ZONE_DELEGATION_N DNS_ZONE_DELEGATION_x There are special situa-

tions where the reference to one or more DNS server is useful, for example when using

ﬂi4l in an intranet without an Internet connection or a mix of these (intranet with an

own DNS-server Internet connection in addition)

Imagine the following scenario:

• Circuit 1: Dial into the Internet

• Circuit 2: Dial into the Company network 192.168.1.0 (ﬁrma.de)

Then you set ISDN_CIRC_1_ROUTE to ‘0.0.0.0’ and ISDN_CIRC_2_ROUTE to ‘192.168.1.0’.

When accessing hosts with IP-Addresses with 192.168.1.x, ﬂi4l will use circuit 2, oth-

erwise circuit 1. But if the company network isn’t public, it presumably has its own DNS

server. Suppose the address of this DNS server would be 192.168.1.12 and the domain

name would be “ ﬁrma.de”.

In this case you will write:

DNS_ZONE_DELEGATION_N='1'

DNS_ZONE_DELEGATION_1_UPSTREAM_SERVER_N='1'

DNS_ZONE_DELEGATION_1_UPSTREAM_SERVER_1_IP='192.168.1.12'

DNS_ZONE_DELEGATION_1_DOMAIN_N='1'

DNS_ZONE_DELEGATION_1_DOMAIN_1='firma.de'

Then, DNS queries for xx.ﬁrma.de are answered from the company’s internal DNS server,

otherwise the DNS server on the Internet is used

Another case:

• Circuit 1: Internet

• Circuit 2: Company network 192.168.1.0 *with* Internet-Access

Here we have two possibilities to reach the internet. To separate private from business,

the following can be used: