netdev - Inter-VRF routing on a single machine

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Message-ID: <CAAJwJQkfVWkdL+tOvcu5C9XBwTpNKcB8qvGeDUO32Tq6nW=xMw@mail.gmail.com>
Date:	Tue, 12 Apr 2016 22:09:22 +1200
From:	Darwin Dingel <darwin.dingel@...il.com>
To:	netdev@...r.kernel.org
Subject: Inter-VRF routing on a single machine

Hi All,

Have anyone tried the following setup on a single machine with 2 TCP
sockets on different VRF's and succeeded?

- client_socket on VRF1
- server_socket on VRF2
- ip rules and iproutes for inter-VRF set up
- client_socket sends TCP connect to server_socket. skb was sent using
VRF1 interface
- skb received in loopback interface
- TCP code got SYN but cannot route back to VRF1 to send ACK.

I was wondering if this is a known limitation of VRF as of the moment,
or could work with proper iprules/iproute.

Thanks!

Darwin