Set high metric on anygw prefix route

Make sure anygw is not used for communication with hosts in the same
network.
Fixes #1078

packages/lime-proto-anygw/files/usr/lib/lua/lime/proto/anygw.lua

@@ -34,7 +34,12 @@ function anygw.configure(args)
 	anygw_ipv4:prefix(ipv4:prefix())
 	local baseIfname = "br-lan"
 	local argsDev = { macaddr = anygw_mac }
-	local argsIf = { proto = "static" }
+	local argsIf = {
+		proto = "static",
+		-- Set high metric for anygw prefix route, so that br-lan is chosen for
+		-- communication with hosts in the same mesh cloud.
+		metric = '2147483647'
+	}
 	argsIf.ip6addr = anygw_ipv6:string()
 	argsIf.ipaddr = anygw_ipv4:host():string()
 	argsIf.netmask = anygw_ipv4:mask():string()