diff --git a/configure.in b/configure.in
index d1b503b0..8d519fdd 100644
--- a/configure.in
+++ b/configure.in
@@ -42,11 +42,13 @@ AC_SUBST(srcdir_rel_mf)
 
 if test "$enable_ipv6" = yes ; then
 	ip=ipv6
+	SUFFIX6=6
 	if test "$with_protocols" = all ; then
 		with_protocols=bgp,pipe,rip,static
 	fi
 else
 	ip=ipv4
+	SUFFIX6=""
 	if test "$with_protocols" = all ; then
 		with_protocols=bgp,ospf,pipe,rip,static
 	fi
@@ -208,6 +210,7 @@ if test "$enable_client" = yes ; then
 fi
 AC_SUBST(CLIENT)
 AC_SUBST(CLIENT_LIBS)
+AC_SUBST(SUFFIX6)
 
 mkdir -p $objdir/sysdep
 AC_CONFIG_HEADERS([$objdir/sysdep/autoconf.h:sysdep/autoconf.h.in])
diff --git a/filter/config.Y b/filter/config.Y
index 5cff47eb..ee4e638d 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -396,8 +396,9 @@ symbol:
        case SYM_VARIABLE | T_PATH:
        case SYM_VARIABLE | T_PATH_MASK:
        case SYM_VARIABLE | T_CLIST:
-	 $$->code = 'C';
+	 $$->code = 'V';
 	 $$->a1.p = $1->def;
+	 $$->a2.p = $1->name;
 	 break;
        default:
 	 cf_error("%s: variable expected.", $1->name );
diff --git a/filter/filter.c b/filter/filter.c
index 9c1dfa34..3df0f0c6 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -64,6 +64,8 @@ pm_path_compare(struct f_path_mask *m1, struct f_path_mask *m2)
   while (1) {
     if ((!m1) || (!m2))
       return !((!m1) && (!m2));
+
+    if ((m1->kind != m2->kind) || (m1->val != m2->val)) return 1;
     m1 = m1->next;
     m2 = m2->next;
   }
@@ -136,7 +138,8 @@ val_compare(struct f_val v1, struct f_val v2)
   }
   switch (v1.type) {
   case T_ENUM:
-  case T_INT: 
+  case T_INT:
+  case T_BOOL:
   case T_PAIR:
     if (v1.val.i == v2.val.i) return 0;
     if (v1.val.i < v2.val.i) return -1;
@@ -156,7 +159,7 @@ val_compare(struct f_val v1, struct f_val v2)
   case T_STRING:
     return strcmp(v1.val.s, v2.val.s);
   default:
-    debug( "Compare of unkown entities: %x\n", v1.type );
+    debug( "Compare of unknown entities: %x\n", v1.type );
     return CMP_ERROR;
   }
 }
@@ -501,6 +504,7 @@ interpret(struct f_inst *what)
     else
       res.val.i = what->a2.i;
     break;
+  case 'V':
   case 'C':
     res = * ((struct f_val *) what->a1.p);
     break;
@@ -868,10 +872,12 @@ i_same(struct f_inst *f1, struct f_inst *f2)
     case T_PREFIX_SET:
       if (!trie_same(f1->a2.p, f2->a2.p))
 	return 0;
+      break;
 
     case T_SET:
       if (!same_tree(f1->a2.p, f2->a2.p))
 	return 0;
+      break;
 
     case T_STRING:
       if (strcmp(f1->a2.p, f2->a2.p))
@@ -886,6 +892,10 @@ i_same(struct f_inst *f1, struct f_inst *f2)
     if (val_compare(* (struct f_val *) f1->a1.p, * (struct f_val *) f2->a1.p))
       return 0;
     break;
+  case 'V': 
+    if (strcmp((char *) f1->a2.p, (char *) f2->a2.p))
+      return 0;
+    break;
   case 'p': case 'L': ONEARG; break;
   case '?': TWOARGS; break;
   case '0': case 'E': break;
diff --git a/filter/test.conf b/filter/test.conf
index 7c05af05..f3b79619 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -171,6 +171,9 @@ string s;
 	
 	b = true;
 	print "Testing bool: ", b, ", ", !b;
+
+        if ( b = true ) then print "Testing bool comparison b = true: ", b;
+	else { print "*** FAIL: TRUE test failed" ; quitbird; }
 	
 	pxs = [ 1.2.0.0/16, 1.4.0.0/16+];
 	print "Testing prefix sets: ";
@@ -218,4 +221,4 @@ int j;
 	accept "ok I take that";
 }
 
-eval __startup();
\ No newline at end of file
+eval __startup();
diff --git a/sysdep/config.h b/sysdep/config.h
index 45648add..df6e6df4 100644
--- a/sysdep/config.h
+++ b/sysdep/config.h
@@ -38,11 +38,11 @@ typedef u16 word;
 /* Path to configuration file */
 #ifdef IPV6
 #  ifdef DEBUGGING
-#    define PATH_CONFIG "bird-6.conf"
-#    define PATH_CONTROL_SOCKET "bird-6.ctl"
+#    define PATH_CONFIG "bird6.conf"
+#    define PATH_CONTROL_SOCKET "bird6.ctl"
 #  else
-#    define PATH_CONFIG PATH_CONFIG_DIR "/bird-6.conf"
-#    define PATH_CONTROL_SOCKET PATH_CONTROL_SOCKET_DIR "/bird-6.ctl"
+#    define PATH_CONFIG PATH_CONFIG_DIR "/bird6.conf"
+#    define PATH_CONTROL_SOCKET PATH_CONTROL_SOCKET_DIR "/bird6.ctl"
 #  endif
 #else
 #  ifdef DEBUGGING
diff --git a/tools/Makefile.in b/tools/Makefile.in
index 8b901efa..6307cf07 100644
--- a/tools/Makefile.in
+++ b/tools/Makefile.in
@@ -43,24 +43,24 @@ tags:
 	cd $(srcdir) ; etags -lc `find $(static-dirs) $(addprefix $(objdir)/,$(dynamic-dirs)) $(client-dirs) -name *.[chY]`
 
 install: all
-	$(INSTALL) -d $(sbindir) $(sysconfdir) $(localstatedir)
-	$(INSTALL_PROGRAM) -s $(exedir)/bird $(sbindir)/
+	$(INSTALL) -d $(DESTDIR)/$(sbindir) $(DESTDIR)/$(sysconfdir) $(DESTDIR)/$(localstatedir)
+	$(INSTALL_PROGRAM) -s $(exedir)/bird $(DESTDIR)/$(sbindir)/bird@SUFFIX6@
 	if test -n "@CLIENT@" ; then								\
-		$(INSTALL_PROGRAM) -s $(exedir)/birdc $(sbindir)/ ;				\
+		$(INSTALL_PROGRAM) -s $(exedir)/birdc $(DESTDIR)/$(sbindir)/birdc@SUFFIX6@ ;				\
 	fi
-	if ! test -f $(sysconfdir)/bird.conf ; then						\
-		$(INSTALL_DATA) $(srcdir)/doc/bird.conf.example $(sysconfdir)/bird.conf ;	\
+	if ! test -f $(DESTDIR)/$(sysconfdir)/bird@SUFFIX6@.conf ; then						\
+		$(INSTALL_DATA) $(srcdir)/doc/bird.conf.example $(DESTDIR)/$(sysconfdir)/bird@SUFFIX6@.conf ;	\
 	else											\
-		echo "Not overwriting old bird.conf" ;						\
+		echo "Not overwriting old bird@SUFFIX@.conf" ;						\
 	fi
 
 install-docs:
-	$(INSTALL) -d $(docdir)
-	$(INSTALL_DATA) $(srcdir)/doc/{bird,prog}{,-*}.html $(docdir)/
+	$(INSTALL) -d $(DESTDIR)/$(docdir)
+	$(INSTALL_DATA) $(srcdir)/doc/{bird,prog}{,-*}.html $(DESTDIR)/$(docdir)/
 
 clean:
 	find . -name "*.[oa]" -o -name core -o -name depend -o -name "*.html" | xargs rm -f
-	rm -f $(exedir)/bird $(exedir)/birdc $(exedir)/bird.ctl .dep-stamp
+	rm -f $(exedir)/bird $(exedir)/birdc $(exedir)/bird.ctl $(exedir)/bird6.ctl .dep-stamp
 
 distclean: clean
 	rm -f config.* configure sysdep/autoconf.h sysdep/paths.h Makefile Rules