diff --git a/HP2100/hp2100_baci.c b/HP2100/hp2100_baci.c
index 063705a6..0fa2d2c7 100644
--- a/HP2100/hp2100_baci.c
+++ b/HP2100/hp2100_baci.c
@@ -26,6 +26,7 @@
    BACI         12966A BACI card
 
    10-Feb-12    JDB     Deprecated DEVNO in favor of SC
+                        Removed DEV_NET to allow restoration of listening port
    28-Mar-11    JDB     Tidied up signal handling
    26-Oct-10    JDB     Changed I/O signal handler for revised signal model
    25-Nov-08    JDB     Revised for new multiplexer library SHOW routines
diff --git a/HP2100/hp2100_mpx.c b/HP2100/hp2100_mpx.c
index a4d91dd9..3c0a0180 100644
--- a/HP2100/hp2100_mpx.c
+++ b/HP2100/hp2100_mpx.c
@@ -26,6 +26,7 @@
    MPX          12792C 8-channel multiplexer card
 
    10-Feb-12    JDB     Deprecated DEVNO in favor of SC
+                        Removed DEV_NET to allow restoration of listening port
    28-Mar-11    JDB     Tidied up signal handling
    26-Oct-10    JDB     Changed I/O signal handler for revised signal model
    25-Nov-08    JDB     Revised for new multiplexer library SHOW routines
diff --git a/HP2100/hp2100_mux.c b/HP2100/hp2100_mux.c
index f341a51d..672ba3cf 100644
--- a/HP2100/hp2100_mux.c
+++ b/HP2100/hp2100_mux.c
@@ -26,6 +26,7 @@
    MUX,MUXL,MUXM        12920A terminal multiplexor
 
    10-Feb-12    JDB     Deprecated DEVNO in favor of SC
+                        Removed DEV_NET to allow restoration of listening port
    28-Mar-11    JDB     Tidied up signal handling
    26-Oct-10    JDB     Changed I/O signal handler for revised signal model
    25-Nov-08    JDB     Revised for new multiplexer library SHOW routines