etc/network/ifupdown2/addons.conf

   1 pre-up,link
   2 pre-up,ppp
   3 pre-up,bond
   4 pre-up,vlan
   5 pre-up,vxlan
   6 pre-up,clagd
   7 pre-up,usercmds
   8 pre-up,bridge
   9 pre-up,bridgevlan
  10 pre-up,mstpctl
  11 pre-up,vrf
  12 pre-up,tunnel
  13 pre-up,ethtool
  14 up,dhcp
  15 up,address
  16 up,addressvirtual
  17 up,usercmds
  18 post-up,usercmds
  19 post-up,clagd
  20 post-up,vxrd
  21 pre-down,ethtool
  22 pre-down,usercmds
  23 pre-down,vxrd
  24 pre-down,dhcp
  25 down,ppp
  26 down,addressvirtual
  27 down,address
  28 down,usercmds
  29 post-down,vrf
  30 post-down,clagd
  31 post-down,mstpctl
  32 post-down,bridgevlan
  33 post-down,bridge
  34 post-down,vxlan
  35 post-down,vlan
  36 post-down,bond
  37 post-down,usercmds
  38 post-down,link
  39 post-down,tunnel