diff --git a/support/docker/ubuntu/base/setup.sh b/support/docker/ubuntu/base/setup.sh
new file mode 100755
index 000000000..ca6732e03
--- /dev/null
+++ b/support/docker/ubuntu/base/setup.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+if ! grep "pgwtun" /proc/net/dev > /dev/null; then
+    ip tuntap add name pgwtun mode tun
+fi
+ip addr del 45.45.0.1/16 dev pgwtun 2> /dev/null
+ip addr add 45.45.0.1/16 dev pgwtun
+ip addr del cafe::1/64 dev pgwtun 2> /dev/null
+ip addr add cafe::1/64 dev pgwtun
+ip link set pgwtun up