diff --git a/.gitmodules b/.gitmodules
index dfc0e266..6e920b0a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -40,3 +40,6 @@
 [submodule "tools/sim-h"]
 	path = tools/sim-h
 	url = https://github.com/open-simh/simh
+[submodule "tools/cbridge"]
+	path = tools/cbridge
+	url = https://github.com/bictorv/chaosnet-bridge
diff --git a/Makefile b/Makefile
index d3aa186f..77a854d8 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,8 @@ BINIGNORE=-e '^(ka10|kl10|ks10|minsys)$$'
 # These are on the minsrc tape.
 SRCIGNORE=-e '^(system|midas)$$'
 
-SUBMODULES = dasm itstar klh10 mldev simh sims supdup tapeutils tv11 pdp6 vt05 tek4010
+SUBMODULES = dasm itstar klh10 mldev simh sims supdup cbridge \
+	tapeutils tv11 pdp6 vt05 tek4010
 
 # These files are used to create bootable tape images.
 RAM = bin/ks10/boot/ram.262
@@ -101,7 +102,8 @@ DUMP=$(shell cd src; ls syseng/dump.* sysnet/netwrk.*)
 SMF:=$(addprefix tools/,$(addsuffix /.gitignore,$(SUBMODULES)))
 OUT=out/$(EMULATOR)
 
-all: its $(OUT)/stamp/test $(OUT)/stamp/emulators tools/supdup/supdup
+all: its $(OUT)/stamp/test $(OUT)/stamp/emulators \
+	tools/supdup/supdup tools/cbridge/cbridge
 
 its: $(SMF) $(OUT)/stamp/its
 
@@ -381,6 +383,9 @@ $(TEK): tek-hack
 tools/supdup/supdup:
 	$(MAKE) -C tools/supdup
 
+tools/cbridge/cbridge:
+	$(MAKE) -C tools/cbridge
+
 $(SMF):
 	$(GIT) submodule sync --recursive `dirname $@`
 	$(GIT) submodule update --recursive --init `dirname $@`
diff --git a/tools/cbridge b/tools/cbridge
new file mode 160000
index 00000000..f71ac772
--- /dev/null
+++ b/tools/cbridge
@@ -0,0 +1 @@
+Subproject commit f71ac772de1c17b3fdba864789eed01b74eb3d3a