diff --git a/metropolis/node/net_ips.go b/metropolis/node/net_ips.go
new file mode 100644
index 0000000..27bc4b1
--- /dev/null
+++ b/metropolis/node/net_ips.go
@@ -0,0 +1,10 @@
+package node
+
+import "net"
+
+// These are IP addresses used by various parts of Metropolis.
+var (
+	// Used by //metropolis/node/kubernetes as the DNS server IP for containers.
+	// Link-local IP space, 77 for ASCII M(onogon), 53 for DNS port.
+	ContainerDNSIP = net.IPv4(169, 254, 77, 53)
+)