diff --git a/configure.ac b/configure.ac
index a7e07a9..b774f07 100644
--- a/configure.ac
+++ b/configure.ac
@@ -275,9 +275,6 @@ AC_CHECK_FUNCS([strcasecmp strncasecmp strspn strtoul])
 AC_CHECK_FUNCS([gethostbyname inet_ntoa select strrchr strstr strtol])
 
 AC_REPLACE_FUNCS([getopt_long_only strncasecmp])
-AC_REPLACE_FUNCS([__ns_initparse __ns_name_uncompress __ns_msg_getflag])
-dnl Magnus Holmgren says this avoids linking a private function
-AC_LIBOBJ([__ns_get16])
 
 AC_CONFIG_FILES([Makefile
                  Doxyfile
diff --git a/src/libreplace/Makefile.am b/src/libreplace/Makefile.am
index a5212bf..7eb0535 100644
--- a/src/libreplace/Makefile.am
+++ b/src/libreplace/Makefile.am
@@ -2,7 +2,6 @@
 MAINTAINERCLEANFILES    = Makefile.in
 
 EXTRA_DIST		= getopt.h \
-	arpa_nameser.h __ns_msg_getflag.c \
 	win32_config.h
 
 noinst_LTLIBRARIES      = libreplace.la
diff --git a/src/libreplace/arpa_nameser.h b/src/libreplace/arpa_nameser.h
index e59ca3d..6cab234 100644
--- a/src/libreplace/arpa_nameser.h
+++ b/src/libreplace/arpa_nameser.h
@@ -55,6 +55,8 @@
 #ifndef REPLACE_ARPA_NAMESER_H_
 #define REPLACE_ARPA_NAMESER_H_
 
+#error do not include
+
 #ifndef __P
 #  define __P(x) x
 #endif