diff --git a/Manuals/Tcpi-ug/Connectivity.ent b/Manuals/Tcpi-ug/Connectivity.ent
index 5147fc1..2a93b24 100644
--- a/Manuals/Tcpi-ug/Connectivity.ent
+++ b/Manuals/Tcpi-ug/Connectivity.ent
@@ -5,3 +5,4 @@
 <!ENTITY connectivity-dialup-modem      SYSTEM "Connectivity/Dialup/modem.docbook">
 <!ENTITY connectivity-dialup-server     SYSTEM "Connectivity/Dialup/server.docbook">
 <!ENTITY connectivity-dialup-client     SYSTEM "Connectivity/Dialup/client.docbook">
+<!ENTITY connectivity-dialup-network    SYSTEM "Connectivity/Dialup/network.docbook">