route add default gw 15.168.35.240
As shown above, run the command route
Destination: default
Gateway: van-student
van-student hostname is defined in /etc/hosts
NIC's DNS server option is defined in /etc/resolv.conf.
By default, the computer will search for /etc/hosts for name resolution. And then, the DNS server resolution.
/etc/host.conf file controls the name resolution order.
cat /etc/host.conf
order hosts, bind
If you modify /etc/host.conf file as:
order bind, hosts
The name resolution order will be DNS first, and then /etc/hosts file.
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http://www.isc.org/index.pl?/sw/dhcp/
download dhcp-4.1.0a1.tar.gz