route two interfaces that has ip of two different subnet

Hassan Yousefzadeh

12/14/22, 1:08 PM

Yes I know it's a duplicate of many questions but I can't find my solution to them. I have a host virtual machine (ubuntu 16.04) that has two network adapters. one of them is connected to the gateway(so it has internet). but another one is just connected to the same port group as the first one. so diagram is something like that:

ubuntu ---
         |
         | ens160(136._.222) ---gateway(136._.209)---> internet
         | ens192(148._.177) ----->

So the question is, How can route all requests from subnet ens192 to the internet?

UPDATE: I enabled IP forwarding with this line:

sysctl -w net.ipv4.ip_forward=1

and set route like this:

ip route add 148._.176/29 via 136._.209 dev ens160

ip route add 148._.176/29 via 136._.222 dev ens160

but I get this message: RTNETLINK answers:FILE EXIST

101

0 + 4

route

ubuntu-16.04

Hassan Yousefzadeh

12/14/22, 1:28 PM

port group on VMWare ESXi. you can define a virtual switch and connect some IPs virtually. A little about routing. what I want to do is for them to connect to the internet that is on the gateway ****209.

Tom Yan

12/15/22, 10:25 AM

You don't need additional route for different sources on the forwarding host. Rather you need that on the "gateway" for the replying traffic to get to those sources (with the forwarding host as the nexthop/gateway).

Hassan Yousefzadeh

12/16/22, 6:08 PM

I guess you don't get my mean .I need to route another NIC to that one that has internet

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: route two interfaces that has ip of two different subnet

TH: กำหนดเส้นทางสองอินเทอร์เฟซที่มี ip ของสองซับเน็ตที่แตกต่างกัน

RO: rutați două interfețe care au ip a două subrețele diferite

RU: маршрутизировать два интерфейса с IP-адресами двух разных подсетей

VI: định tuyến hai giao diện có ip của hai mạng con khác nhau

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