server=172.25.250.254
server=192.168.1.1

dig index.docker.io -> answer 0
dig node1.lab.example.com -> answer 1

dig index.docker.io -> answer 3
dig node1.lab.example.com -> answer 0

no-resolv
domain-needed
no-negcache
max-cache-ttl=1
enable-dbus
dns-forward-max=5000
cache-size=5000
bind-dynamic
except-interface=lo
# End of config