commit 64b6c43379dba176659bc1313b6bb488ac94cfd6
author Steinar H. Gunderson <sesse@google.com> Mon Dec 20 11:33:31 2010 +0100
committer Steinar H. Gunderson <sesse@google.com> Wed Jan 05 13:55:40 2011 +0100
tree 0144bb9ce62e5ca658adb1fc39d83ecf88a18595
parent 72a23d056099e7aff56d4509f3e6c9284a42363a

Add a new #define IN6_IS_ADDR_ULA, for testing for Universal Local IPv6 Unicast addresses (ULAs). These replace the old site-local IPv6 addresses.

Change-Id: I2656423764569d07b92b8eb8fe6dcad6eba5b0bb

libc/include/netinet/in6.h

diff --git a/libc/include/netinet/in6.h b/libc/include/netinet/in6.h
index c7a6374..580a510 100644
--- a/libc/include/netinet/in6.h
+++ b/libc/include/netinet/in6.h
@@ -60,6 +60,10 @@
 #define IN6_IS_ADDR_SITELOCAL(a)	\
 	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 
+/* RFC 4193. */
+#define IN6_IS_ADDR_ULA(a)	\
+	(((a)->s6_addr[0] & 0xfe) == 0xfc)
+
 #define IN6_IS_ADDR_MULTICAST(a)	\
 	(((__const uint8_t *) (a))[0] == 0xff)