There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

2020-03-29  Kingpin  <martin@ubuntu>

	* lib/Net/Address/Ethernet.pm (get_addresses): use /sbin/ip if Ifconfig fails

2016-02-07  Kingpin  <martin@localhost.localdomain>

	* Ethernet.pm (get_addresses): removed warning