Enable rtadv by default.

Resolves bug #66.
diff --git a/ChangeLog b/ChangeLog
index 13f5457..1e80b42 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,10 +1,21 @@
 2003-12-03  Greg Troxel  <gdt@poblano.ir.bbn.com>
 
+	* configure.ac: Compile in Router Advertisement support by
+	default.  Note that this does not default to sending RAs; it just
+	makes 'ipv6 nd send-ra' and 'ipv6 nd prefix-advertisement'
+	available.  While others may prefer other tools, no argument has
+	been made that router advertisement support is such bloat that it
+	should be compiled out by default (it 9556 bytes on NetBSD/i386 vs
+	8 bytes with the support compiled out). This reversion of a
+	previous change was done in consultation with Paul.
+
+2003-12-03  Greg Troxel  <gdt@poblano.ir.bbn.com>
+
 	* configure.ac: Move tests for v6 header files to after the check
 	for v6 code version, and conditionalize on the right variable.
 	(Fixes problem where v6 header files are not included when v6 is
 	enabled implicitly.)
-	
+
 2003-12-03  Greg Troxel  <gdt@poblano.ir.bbn.com>
 
 	* configure.ac: Add --enable-exampledir to specify where example
diff --git a/configure.ac b/configure.ac
index b3fd50e..725ce72 100755
--- a/configure.ac
+++ b/configure.ac
@@ -117,7 +117,7 @@
 [  --enable-vty-group=ARG      set vty sockets to have specified group as owner])
 
 AC_ARG_ENABLE(rtadv,
-[  --enable-rtadv         enable IPV6 router advertisement feature])
+[  --disable-rtadv         disable IPV6 router advertisement feature])
 
 if test "${enable_broken_aliases}" = "yes"; then
   if test "${enable_netlink}" = "yes"
@@ -146,10 +146,10 @@
   AC_DEFINE(HAVE_OSPF_TE,,OSPF TE)
 fi
 
-AC_MSG_CHECKING(Should zebra's RTADV be used)
-if test "${enable_rtadv}" = "yes"; then
+AC_MSG_CHECKING(if zebra should be configurable to send Route Advertisements)
+if test "${enable_rtadv}" != "no"; then
   AC_MSG_RESULT(yes)
-  AC_DEFINE(HAVE_RTADV,,Enable zebra IPv6 Routing Advertisements)
+  AC_DEFINE(HAVE_RTADV,,Enable IPv6 Routing Advertisement support)
 else
   AC_MSG_RESULT(no)
 fi