ddns-update-style interim;
ignore client-updates;
subnet 192.168.1.0 netmask 255.255.255.0 {
# --- default gateway
option routers   192.168.1.1;
option subnet-mask  255.255.255.0;
option nis-domain  "domain.org";
option domain-name  "domain.org";
option domain-name-servers 192.168.1.1;
option time-offset  -18000; # Eastern Standard Time
# option ntp-servers  192.168.1.1;
# option netbios-name-servers 192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;
range dynamic-bootp 192.168.1.128 192.168.1.254;
default-lease-time 21600;
max-lease-time 43200;
# we want the nameserver to appear at a fixed address
host ns {
  next-server marvin.redhat.com;
  hardware ethernet 12:34:56:78:AB:CD;
  fixed-address 207.175.42.254;
}
}
subnet 192.168.0.0 netmask 255.255.255.0 {
# --- default gateway
option routers   192.168.0.1;
option subnet-mask  255.255.255.0;
option nis-domain  "domain.org";
option domain-name  "domain.org";
option domain-name-servers 192.168.1.1;
option time-offset  -18000; # Eastern Standard Time
# option ntp-servers  192.168.1.1;
# option netbios-name-servers 192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;
range dynamic-bootp 192.168.0.128 192.168.0.254;
default-lease-time 21600;
max-lease-time 43200;
}
然后去交换机上去做中继