Re: [9fans] Pi3 with 2 nics

[David Pick <D.M.Pick@qmul.ac.uk>]

On 14/04/17 23:37, Adriano Verardo wrote:

> I have a pi3 with normal and wifi eth interfaces under the same stack.
> Wifi address is 10.12.12.15/16, the address of the other nic is
> 10.11.12.15/16,
> /net seems to be correct, the connection to the AP is up and running.
> But:
>
> (1) ping wifi 10.12.12.15 doesn't work when the Rj45 is unplugged
> (2) ping wifi 10.12.12.15 works when the Rj45 is plugged
> (3) the arp tables on the net all have a correct 10.12.12.15 entry
> (4) ip/ping -a to 10.11.x.x or 10.12.x.x always displays
>      10.11.12.15 -> ...   and doesn't work when the cable is unplugged.
> (5) with/without cable, "snoopy /net/ether1" (wifi nic) shows
>      icmp packets when pinging.
>
> I'm quite confused.
> Could anyone kindly tell me where is my mistake  ?

When this situation occurs on *any* OS I'd check the "defaut" route
and/or the connectivity of the other end. You don't say what the
connectivity of the other end is for the tests you've performed
and it makes a difference to the ability of the pi3 to respond via
the correct interface.

--
David Pick
Network Security Manager, IT Services
Queen Mary University of London
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