首先route -all -4
C:\Users\Administrator>route -p add 192.168.0.192 mask 255.255.255.192 192.168.0.238
LINUX
LINU
ip route add 192.168.0.0/24 via 192.168.0.1

LINUX删除路由规则：
route del -net 192.168.0.192 netmask 255.255.255.192 gw 192.168.0.241

iptables -t nat -D PREROUTING 1

配置内网
vi /etc/sysconfig/network-scripts/ifcfg-em2
重启网卡
service network restart

Centos连接PPTP客户端

yum install -y ppp pptp pptp-setup

vi /etc/ppp/options
refuse-pap
refuse-eap
refuse-chap
refuse-mschap
require-mppe

pptpsetup --create test --server XXX.XXX.XXX.XXX --username user --password ********* --encrypt --start

添加路由
ip route replace default dev ppp0 注意使用，会断开网络
ip route add 192.168.0.0/24 via 192.168.0.1

/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/conf/haproxy.cfg