"arp-scan -l" produces no listing on 19.10, works fine on 19.04

[Chris Green]

On Wed, Dec 25, 2019 at 03:06:30PM +0000, Chris Green wrote:
> I have been using the command "arp-scan -l" to get e listing of local
> systems for many, many years.
> 
> Suddenly, with version 19.10, it has stopped producing the listing.
> It's even the same version of arp-scan that works OK on 19.04.
> 
[snip details]

Further searching shows that it's a known issue with the latest libpcap
library.  Works fine with libpcap 1.9.0 but fails as above with
libpcap 1.9.1.  Latest arp-scan is fixed, I will wait for it to get
through the repositories.

-- 
Chris Green