DHCP3 dual NIC configuration in Ubuntu system

The IP of the server is 192.168.1.1 and 192.168.2.1 two IP, support two different segment 192.168.1.0 192.168.2.0
Support for network card remote boot LTSP. The following is the DHCP3 service's listening network card.

$ cat/etc/dhcp3/dhcpd.conf

&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP;

Ddns-update-style 56.html ">none;  Option Domain-name "Hu Jintao";  Default-lease-time 60000;  Max-lease-time 720000;    Subnet 192.168.2.0 netmask 255.255.255.0 {range 192.168.2.10 192.168.2.250;    Option routers 192.168.2.1;    Option Domain-name-servers 192.168.2.1, 202.96.128.143, 211.95.193.97;    FileName "/ltsp/pxelinux.0";    Option Root-path "/opt/ltsp/i386";      Host User1 {Hardware Ethernet * *:* *:* *:* *:* *:* *;    Fixed-address 192.168.2.2;    } subnet 192.168.1.0 netmask 255.255.255.0 {range 192.168.1.10 192.168.1.250;    Option routers 192.168.1.1;    Option Domain-name-servers 192.168.1.1, 202.96.128.143, 211.95.193.97;    FileName "/ltsp/pxelinux.0";    Option Root-path "/opt/ltsp/i386";      Host User2 {Hardware Ethernet * *:* *:* *:* *:* *:* *;    Fixed-address 192.168.1.2;  } authoritative; Log-facility Local7;

$ cat/etc/default/dhcp3-server

interfaces= "Eth0 eth1"