OpenSuse Leap 15 Configure bind for IPv4 recursive lookup

To configure IPv4 recursive lookup DNS using bind use following steps:

Start bind and verify recursive lookup is working

systemctl start named
systemctl enable named
systemctl status named
nslookup www.google.co.in 127.0.0.1

Edit /etc/sysconfig/named and set
```
NAMED_RUN_CHROOTED="no"
NAMED_ARGS="-4"
```
Edit /etc/named.conf and append
```
filter-aaaa-on-v4 yes;
```
at end of options{} section

Verify that IPv6 lookup has stopped using:

systemctl restart named
nslookup www.google.co.in 127.0.0.1

In wireless settings of configured networks DNS can be changed from automatic to 127.0.0.1 if the network will allow full outgoing DNS access via UDP/TCP port 53

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