Simple dynamic DNS server

From

http://mkaczanowski.com/golang-build-dynamic-dns-service-go/#server_code

Start the server

godep go build
sudo ./dyndns 

Put this in update.txt:

server 127.0.0.1
debug no
zone example.com.
update delete db.example.com A
update add db.example.com. 120 A 10.2.23.67
send

Do an update

nsupdate update.txt 

Do a lookup

dig +short @127.0.0.1 db.example.com
10.2.23.67