...device node. tun A persistent Level 3 tunnel between a network device and a device node. veth An Ethernet tunnel between a pair of network devices. vlan A VLAN is a stacked devi…...nicate with the guest. Commonly, the passed interface index refers to the host side of a "veth" link (in case of containers), a "tun"/"tap" link (in case of VMs), or the host si…...with a "!", the test is inverted. Some valid values are "bond", "bridge", "gre", "tun", "veth". Valid kinds are given by netlink's "IFLA_INFO_KIND" attribute, so this is not com…