o:value("server", translate("server mode"))
o:value("relay", translate("relay mode"))
-o = s:option(ListValue, "mamangement_level", translate("DHCPv6-Mode"))
+o = s:option(ListValue, "management_level", translate("DHCPv6-Mode"))
o:value("", translate("stateless"))
o:value("1", translate("stateless + stateful"))
o:value("2", translate("stateful-only"))