[Linux]RHEL使用DSN和DHCP

//named.confoptions {    listen-on port 53 { any; };    listen-on-v6 port 53 { ::1; };    directory           "/var/named";    dump-file           "/var/named/data/cache_dump.db";    statistics-file     "/var/named/data/named_stats.txt";    memstatistics-file  "/var/named/data/named_mem_stats.txt";    allow-query { any; };    recursion yes;        dnssec-enable yes;    dnssec-validation yes;    dnssec-lookasside auto;        bindkeys-file "/etc/named.iscdlv.key";    managed-keys-directory "/var/named/dynamic";};logging {    channel default_debug {        file "data/named.run";        severity dynamic;    };};zone "." IN{    type hint;    file "named.ca";};include "/etc/named.svr.zones";//named.svr.zoneszone "svr" IN {    type master;    file "named.svr";    allow-update { none; };};//named.svr$TTL 1D@   IN SOA ns.svr root(                        0       ;serial                        1D      ;refresh                        1H      ;retry                        1W      ;expire                        3H )    ;minimum    NS  nsns  A   10.126.1.10agent   A   10.126.1.10svn A   10.126.1.100#dhcpd.confdefault-lease-time 600;max-lease-time 7200;subnet 10.126.8.0 netmask 255.255.255.0 {    range 10.126.1.200 10.126.1.250;    options domain-name-servers 10.126.1.10;    option router 10.126.8.10;    option subnet-mask 255.255.255.0;}