dns server

Some implementations of rfc 1035.

There is a little explanation about some files that you would like to modify:

domains.json

domain (array): domain name
- address (string): ipv4/ipv6 address
- type (number): for ipv4 use 1, for ipv6 use 28

note: use * as domain name for answer in case of nxdomain.

nameservers.txt

Set nameservers ipv4 to handle with domains that are not in domains.json

main.rs

Set ip to bind socket at some network interface.