P: /devices/virtual/net/tunl0
E: DEVPATH=/devices/virtual/net/tunl0
E: ID_NET_LINK_FILE=/lib/systemd/network/99-default.link
E: IFINDEX=4
E: INTERFACE=tunl0
E: SUBSYSTEM=net
E: SYSTEMD_WANTS=ifup@tunl0.service
E: USEC_INITIALIZED=23808
X: INTERFACE_MAC=00:00:00:00