我已经尝试了几天，但到目前为止还没有成功。我的情况就像SSID #2 上的 VPN (OpenWRT)，但略有不同。
就我而言，我使用的是 OpenVPN；我的 2.4ghz 和 5ghz 有一个单独的 SSID，5ghz 上有一个应该通过 OpenVPN 的单独实例。
我的理解是我需要查看 IP 路由，但是我的网络知识太有限，无法做到这一点。
我在 IP 范围 192.168.1.x 上运行“常规”实例。应通过 VPN 的实例位于 192.168.55.x。
在比较问题的答案上，我尝试
ip route add 192.168.55.0/24 dev tun0
但这给了我一个错误：
Cannot find device "tun0"
显然tun0是OpenVPN。
我真的不知道如何解决这个问题，也不知道该朝哪个方向努力。也许有人能帮我解决这个问题。
编辑：我已经尝试过将特定子网路由到 VPN 隧道这也可以在 OpenVPN 配置中看到，但没有成功。
我的配置文件：
/etc/config/网络
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd15:4503:4ed4::/48'
config interface 'lan'
option ifname 'eth1'
option force_link '1'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
config interface 'wan'
option ifname 'eth0'
option proto 'dhcp'
config interface 'wan6'
option ifname 'eth0'
option proto 'dhcpv6'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0 2 3 4 5'
config switch_vlan
option device 'switch0'
option vlan '2'
option ports '1 6'
config interface 'VPN'
option proto 'none'
option ifname 'tun0'
config interface 'OVPN'
option _orig_ifname 'wlan0-1'
option _orig_bridge 'false'
option proto 'static'
option ipaddr '192.168.55.1'
option netmask '255.255.255.0'
到目前为止我使用它来连接到 OpenVPN。
/etc/openvpn/客户端.ovpn
client
dev tun
proto udp
port 1194
remote 108.61.152.187
resolv-retry infinite
nobind
persist-key
persist-tun
ca /etc/openvpn/ca.crt
cert /etc/openvpn/client.crt
key /etc/openvpn/client.key
auth-user-pass ./pass.txt
ns-cert-type server
cipher AES-256-CBC
comp-lzo
verb 3
#Prevents default gateway from being set on the default routing table
route-noexec
#Allows route-up script to be executed
script-security 2
#Calls custom shell script after connection to add necessary routes
route-up /etc/openvpn/route-up.sh
/etc/config/无线
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:01/0000:01:00.0'
option country '00'
option htmode 'VHT80'
option channel '157'
option txpower '30'
config wifi-iface
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'TP-Link 5G'
option encryption 'psk2'
option key 'key'
config wifi-device 'radio1'
option type 'mac80211'
option channel '5'
option hwmode '11n'
option path 'platform/qca955x_wmac'
option htmode 'HT40'
option txpower '30'
option country '00'
config wifi-iface
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'TP-Link'
option encryption 'psk-mixed+ccmp'
option key 'key'
config wifi-iface
option device 'radio0'
option mode 'ap'
option ssid 'TP-Link VPN'
option network 'OVPN'
option encryption 'psk2'
option key 'key'
路由启动脚本
#!/bin/sh
#Clear all routes on vpn routing table (this is to make sure there isn't any crap left over from a previous vpn connection
ip route flush table vpn
#Copy routing table from main routing table into vpn table
ip route show table main | grep -Ev ^default | while read ROUTE ; do ip route add table vpn $ROUTE; done
#Add default gateway to vpn routing table
ip route add default via ${route_vpn_gateway} dev ${dev} table vpn
结果配置文件
6rd-wan_6rd Link encap:IPv6-in-IPv4
inet6 addr: ::77.174.30.80/96 Scope:Compat
inet6 addr: 2001:838:ad1e:5000::1/40 Scope:Global
UP RUNNING NOARP MTU:1280 Metric:1
RX packets:256964 errors:0 dropped:0 overruns:0 frame:0
TX packets:160291 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:284886943 (271.6 MiB) TX bytes:18047017 (17.2 MiB)
br-lan Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F6
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: 2001:838:ad1e:5000::1/60 Scope:Global
inet6 addr: fe80::eade:27ff:fef5:e7f6/64 Scope:Link
inet6 addr: fd15:4503:4ed4::1/60 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19173187 errors:0 dropped:0 overruns:0 frame:0
TX packets:13930435 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:21346350453 (19.8 GiB) TX bytes:19757831552 (18.4 GiB)
br-lan:1 Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F6
inet addr:10.3.5.3 Bcast:10.255.255.255 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0 Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F7
inet addr:77.174.30.80 Bcast:77.174.31.255 Mask:255.255.252.0
inet6 addr: fe80::eade:27ff:fef5:e7f7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7978235 errors:0 dropped:0 overruns:2 frame:0
TX packets:3747223 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3172877058 (2.9 GiB) TX bytes:259141128 (247.1 MiB)
Interrupt:4
eth1 Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F6
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5749 errors:0 dropped:0 overruns:0 frame:0
TX packets:21872 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:968857 (946.1 KiB) TX bytes:4234774 (4.0 MiB)
Interrupt:5
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1389 errors:0 dropped:0 overruns:0 frame:0
TX packets:1389 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:108498 (105.9 KiB) TX bytes:108498 (105.9 KiB)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 -00
inet addr:10.8.0.22 P-t-P:10.8.0.21 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F4
inet6 addr: fe80::eade:27ff:fef5:e7f4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1398316 errors:0 dropped:0 overruns:0 frame:0
TX packets:5616658 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:116548785 (111.1 MiB) TX bytes:3907071356 (3.6 GiB)
wlan0-1 Link encap:Ethernet HWaddr EA:DE:27:F5:E7:F4
inet addr:192.168.55.1 Bcast:192.168.55.255 Mask:255.255.255.0
inet6 addr: fe80::e8de:27ff:fef5:e7f4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:1944 (1.8 KiB)
wlan1 Link encap:Ethernet HWaddr E8:DE:27:F5:E7:F5
inet6 addr: fe80::eade:27ff:fef5:e7f5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17805065 errors:0 dropped:0 overruns:0 frame:0
TX packets:8380514 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32356101 (30.8 MiB) TX bytes:3263563261 (3.0 GiB)