From: john.rutherf...@dektech.com.au
Date: Mon, 24 Jun 2019 16:44:35 +1000
> Since node internal messages are passed directly to socket it is not
> possible to observe this message exchange via tcpdump or wireshark.
>
> We now remedy this by making it possible to clone such messages and send
> the clones to the loopback interface. The clones are dropped at reception
> and have no functional role except making the traffic visible.
>
> The feature is turned on/off by enabling/disabling the loopback "bearer"
> "eth:lo".
>
> Acked-by: Jon Maloy <jon.ma...@ericsson.com>
> Signed-off-by: John Rutherford <john.rutherf...@dektech.com.au>
What a waste, just clone the packet, attach loopback to it, and go:
if (dev_nit_active(loopback_dev))
dev_queue_xmit_nit(skb, loopback_dev);
