RFC 4191 Default Router Preference support for router advertisements
Adds "ipv6 nd router-preference (high|medium|low)" and
"no ipv6 nd router-preference" interface commands.
Files modified:
doc/ipv6.texi
zebra/interface.c
zebra/interface.h
zebra/rtadv.c
zebra/rtadv.h
Signed-off-by: Chris Caputo <ccaputo@alt.net>
diff --git a/zebra/interface.h b/zebra/interface.h
index 968430a..0cf6640 100644
--- a/zebra/interface.h
+++ b/zebra/interface.h
@@ -46,7 +46,7 @@
#endif
#ifdef RTADV
-/* Router advertisement parameter. From RFC2461 and RFC3775. */
+/* Router advertisement parameter. From RFC2461, RFC3775 and RFC4191. */
struct rtadvconf
{
/* A flag indicating whether or not the router sends periodic Router
@@ -171,6 +171,13 @@
Default: FALSE */
int AdvIntervalOption;
+
+ /* The value to be placed in the Default Router Preference field of
+ a router advertisement. See [RFC 4191 2.1 & 2.2]
+
+ Default: 0 (medium) */
+ int DefaultPreference;
+#define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */
};
#endif /* RTADV */