[ipoe]
vlan-name=lua:make_vlan_name
lua function accepts three arguments: parent interface name, parent vlan number and vlan number caused vlan creation
sample lua function:
function make_vlan_name(ifname, svid, cvid)
print('make_vlan_name: '..ifname..','..svid..','..cvid)
return ifname..'.'..cvid
end