+local network = require "luci.model.network"
+if network:has_ipv6() then
+ local s = m:section(NamedSection, "globals", "globals", translate("Global network options"))
+ local o = s:option(Value, "ula_prefix", translate("IPv6 ULA-Prefix"))
+ o.datatype = "ip6addr"
+ o.rmempty = true
+ m.pageaction = true
+end
+
+