diff --git a/sysctl/dn42.conf b/sysctl/dn42.conf
new file mode 100644
index 0000000..b1cebb2
--- /dev/null
+++ b/sysctl/dn42.conf
@@ -0,0 +1,9 @@
+net.ipv4.conf.all.forwarding = 1
+net.ipv4.conf.all.rp_filter = 0
+net.ipv4.conf.default.forwarding = 1
+net.ipv4.conf.default.rp_filter = 0
+net.ipv6.conf.all.accept_ra = 2
+net.ipv6.conf.all.forwarding = 1
+net.ipv6.conf.default.accept_ra = 2
+net.ipv6.conf.default.forwarding = 1
+net.ipv6.conf.all.proxy_ndp = 1