# Update PTR record

nsupdate -g

```bash
server giran.cyou
update delete 10.254.168.192.in-addr.arpa. PTR
update add 10.254.168.192.in-addr.arpa. 300 PTR yun.giran.cyou.
send
quit
```

```bash
echo -e 'server giran.cyou\n update delete 10.254.168.192.in-addr.arpa. PTR\n update add 10.254.168.192.in-addr.arpa. 300 PTR yun.giran.cyou.\n send\n quit
' | nsupdate -g
```

```bash
realm GIRAN.CYOU
update delete 10.254.168.192.in-addr.arpa. in PTR
update add 10.254.168.192.in-addr.arpa. 3600 in PTR yun.giran.cyou.
send
realm GIRAN.CYOU
update delete 7.2.b.0.f.b.e.f.f.f.e.7.d.1.4.a.a.0.0.0.3.0.0.1.0.4.8.e.2.0.a.2.ip6.arpa. in PTR
update add 7.2.b.0.f.b.e.f.f.f.e.7.d.1.4.a.a.0.0.0.3.0.0.1.0.4.8.e.2.0.a.2.ip6.arpa. 3600 in PTR yun.giran.cyou.
send
```