linux vlan路由

network 192.168.100.0/24 vlan 100
network 192.168.200.0/24 vlan 200

一个ubuntu服务器(1个以太2个vlan)
eth0.100(ip：192.168.100.10/24)
eth0.200(ip：192.168.200.20/24 def gw 1??92.168.200.254)

情况如下：

> eth0.200已上架
> eth0.100我们失望了.
>子网192.168.100.0/24的连接可以到192.168.200.20.

当我创建eth0.100时：

>无法从192.168.100.0/24网络访问192.168.200.20. (错误的接口响应.当包从192.168.100.0/24到达192.168.200.20时,它被192.168.100.10回复)

怎么解决这个问题？

尝试使用rp_filter = 0 / rp_filter = 1

#cat /etc/network/interfaces
iface eth0.200 inet static
    address 192.168.200.20
    netmask 255.255.255.0
    vlan-raw-device eth0
    gateway 192.168.200.254
    post-up ip r a 192.168.200.6 via 192.168.200.250 #one ip behind wifi

iface eth0.100 inet static
    address 192.168.100.10
    netmask 255.255.255.0
    vlan-raw-device eth0

希望合作：

iptables -A PREROUTING -t mangle -i eth0.100 -j MARK --set-mark 100
iptables -A PREROUTING -t mangle -i eth0.200 -j MARK --set-mark 200
making some route tables like t100 and t200
and then ading rule like:
ip rule add from all fwmark 100 table t100
ip rule add from all fwmark 200 table t200

它是RP_FILTER

net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.eth0/100.rp_filter = 0
net.ipv4.conf.eth0/200.rp_filter = 0