diff --git a/config/balance-defs.make b/config/balance-defs.make
index 4466016a30e20afc08d580a1da9d5d422a905b65..03057439c59ffe54996bfd63565c5e7632d9f575 100644
--- a/config/balance-defs.make
+++ b/config/balance-defs.make
@@ -1,5 +1,5 @@
 #
-# $Id: balance-defs.make,v 1.8 1991/10/31 00:14:44 ceder Exp $
+# $Id: balance-defs.make,v 1.9 1992/01/05 18:22:26 ceder Exp $
 # Copyright (C) 1991  Lysator Academic Computer Association.
 #
 # This file is part of the LysKOM server.
@@ -22,7 +22,7 @@
 #
 # Please mail bug reports to bug-lyskom@lysator.liu.se. 
 #
-# $Id: balance-defs.make,v 1.8 1991/10/31 00:14:44 ceder Exp $
+# $Id: balance-defs.make,v 1.9 1992/01/05 18:22:26 ceder Exp $
 # This file is included by all Makefiles in the LysKOM hierarchy.
 # It gives default values for all variables that is normally used. 
 # TOPDIR and SCRIPTDIR must be set before this file is included.
@@ -52,6 +52,9 @@ PIPE = -pipe
 # -h flag makes NULL pointer references generate runtime errors
 LDFLAGS = -h -L$(LIBDIR)
 
+# Library for hostname lookup.
+LIBRESOLV = -lresolv
+
 CFLAGS =  $(INCLUDES)  $(OPTIMIZE-FLAGS)  $(MISC-CFLAGS) $(PIPE) $(TARGET)
 
 # LysKOM executables that the typical user don't use go here.
diff --git a/config/sun4os4-defs.make b/config/sun4os4-defs.make
index b6eea31e29bdb1bb7caee25d00eadc56cfe93f18..d0cb789c18a8240e71b1430e88275bd7832016df 100644
--- a/config/sun4os4-defs.make
+++ b/config/sun4os4-defs.make
@@ -1,5 +1,5 @@
 #
-# $Id: sun4os4-defs.make,v 1.9 1991/10/31 00:14:40 ceder Exp $
+# $Id: sun4os4-defs.make,v 1.10 1992/01/05 18:22:24 ceder Exp $
 # Copyright (C) 1991  Lysator Academic Computer Association.
 #
 # This file is part of the LysKOM server.
@@ -22,7 +22,7 @@
 #
 # Please mail bug reports to bug-lyskom@lysator.liu.se. 
 #
-# $Id: sun4os4-defs.make,v 1.9 1991/10/31 00:14:40 ceder Exp $
+# $Id: sun4os4-defs.make,v 1.10 1992/01/05 18:22:24 ceder Exp $
 # This file is included by all Makefiles in the LysKOM hierarchy.
 # It gives default values for all variables that is normally used. 
 # TOPDIR and SCRIPTDIR must be set before this file is included.
@@ -53,6 +53,16 @@ PIPE = -pipe
 # -h flag makes NULL pointer references generate runtime errors
 LDFLAGS = -h -L$(LIBDIR)
 
+# Library for hostname lookup.
+# There is a bug in SunOS 4.1.1 that makes it impossible to use -lresolv.
+# It can be fixed by either installing the 4.0.3 version of
+# /usr/lib/libreslov.a or by omitting -lresolv.
+#
+# Note that -lresolv is not necessary if YP/NIS is set up so that the NIS 
+# server asks the nameserver.
+
+LIBRESOLV = -lresolv
+
 CFLAGS =  $(INCLUDES)  $(OPTIMIZE-FLAGS)  $(MISC-CFLAGS) $(PIPE) $(TARGET)
 
 # LysKOM executables that the typical user doesn't use go here.