auto p2p4
iface p2p4 inet manual
  up echo 0 > /sys/class/net/p2p4/device/sriov_numvfs
  up echo ${IF_SRIOV_NUMVFS:-0} > /sys/class/net/enp1s0f0/device/sriov_numvfs
  sriov_numvfs 7