Device operation and operation
40
DHCP configuration
The DHCP configuration is carried out automatically to match the IP
address entered under "IP configuration".
Fig. 12: DHCP configuration
DNS
The CAR-A-WAN comes with its own DNS server, which is bound to the
router's address and is always switched on. This DNS has the peculiarity
that it does not direct its queries to the DNS servers of the respective
mobile phone providers, but directly queries the root servers and from
there, with the typical mobile phone runtime, the previously determined
responsible DNS servers of the hosts to be reached.
By its very nature, this query is slower than a query from mobile providers,
but offers advantages when using multiple, parallel WAN connections: This
avoids DNS queries from the Internet running into the void because they
were made via the Internet (seen from the other side - via the other mobile
phone provider) instead of via the switching mobile phone provider.