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Backport (simple cherry-pick) 64b6c43379dba176659bc1313b6bb488ac94cfd6

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to gingerbread.

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.
This commit is contained in:
Steinar H. Gunderson 2010-12-20 11:33:31 +01:00
parent a798b9f0e1
commit f4dca7be3b
1 changed files with 4 additions and 0 deletions
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4
libc/include/netinet/in6.h
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@ -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)