diff --git a/docker_helpers/setup_D.sh b/docker_helpers/setup_D.sh
new file mode 100755
index 0000000..d188bfc
--- /dev/null
+++ b/docker_helpers/setup_D.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+# Configuration steps specific to docker instances of node D
+
+ip route add 192.168.2.0/24 via 192.168.3.2
+ip -6 route add fd02::/64 via fd03::2