Don't fail if we do not have v6 support

1 files changed, 9 insertions, 1 deletions

diff --git a/libs/sys/luasrc/sys.lua b/libs/sys/luasrc/sys.lua
index 948da5b1e..e92adc1ad 100644
--- a/libs/sys/luasrc/sys.lua
+++ b/libs/sys/luasrc/sys.lua
@@ -320,7 +320,11 @@ end
 --			  "flags", "device" }
 function net.defaultroute6()
 	local route = nil
-	for _, r in pairs(net.routes6()) do
+	local routes6 = net.routes6()
+	if not routes6 then
+		return nil
+	end
+	for _, r in pairs(routes6) do
 		if r.dest:prefix() == 0 and (not route or route.metric > r.metric) then
 			route = r
 		end
@@ -417,6 +421,10 @@ end
 function net.routes6()
 	local routes = { }
 
+	if not luci.fs.access("/proc/net/ipv6_route", "r") then
+		return nil
+	end
+
 	for line in io.lines("/proc/net/ipv6_route") do
 
 		local dst_ip, dst_prefix, src_ip, src_prefix, nexthop,