explanation
sample:
===
>cat /var/named/run-root/var/zzz.yyy.xx.in-addr.arpa
; *** This file is automatically generated by Plesk ***
$TTL 86400
@ IN SOA hosting.isp.com. root.isp.com. (
1226391305 ; Serial
10800 ; Refresh
3600 ; Retry
604800 ; Expire
10800 ) ; Minimum
IN NS hosting.isp.com.
134 IN PTR hosting.isp.ru.
1 IN PTR host1.isp.ru.
=end sample
how to add string
IN NS ns2.isp.com.
?