Add ANYCAST_PREFIX community.

Signed-off-by: Maximilian Wilhelm <max@rfc2324.org>

bird/ff-policy.conf

@@ -65,6 +65,8 @@ define EXPORT_ONLY_AT_CR02   = (65132, 102);
 define EXPORT_ONLY_AT_CR03   = (65132, 103);
 define EXPORT_ONLY_AT_BBR_KT = (65132, 197);
 
+# Anycasted prefix
+define ANYCAST_PREFIX = (65132,999);
 
 # To be placed in /etc/bird/ff_killswitch.conf
 define SITE_LEGACY_ONLINE = 1;