iproute2 is a direct depency from pve-qemu-kvm and should
be always available
use -statistics so we get the RX/TX traffic sum like ifconfig
use -details to get extra info like current vlan_protocol
my @machines = ('qm list', sub { dir2text('/etc/pve/qemu-server/', '\d.*conf') });
-my @net = ('ifconfig', 'cat /etc/network/interfaces', sub { dir2text('/etc/pve/firewall/', '.*fw') },
+my @net = ('ip -details -statistics address', 'cat /etc/network/interfaces', sub { dir2text('/etc/pve/firewall/', '.*fw') },
'iptables-save');
my @cluster = ('pvecm nodes', 'pvecm status');