[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

This option specifies value of Calling-Station-Id value.
Available options are 'mac' and 'ip'.