How to determine which network card the subscriber is active and what is not?

Thanks and keep active? What you connect to LAN then to navigate?
March 19th 20 at 09:14
1 answer
March 19th 20 at 09:16
Thanks and keep active?
What do you mean active? Can be active all ten NICs.
You wonder what map there is a traffic in the Internet? Then see the routes.
If the route is explicitly set traffic is in route, or default gateway.

What you connect to LAN then to navigate?
The LAN connection is not a network card, the connection.
One connection to the local network may go after ten network cards and one network card can go ten connections to the local network.

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