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-rw-r--r--include/net/ipv6.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 9059e0e..9573c8d 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -377,6 +377,12 @@ static inline int ipv6_addr_any(const struct in6_addr *a)
a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
}
+static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
+{
+ return ((a->s6_addr32[0] | a->s6_addr32[1]) == 0 &&
+ a->s6_addr32[2] == htonl(0x0000ffff));
+}
+
/*
* find the first different bit between two addresses
* length of address must be a multiple of 32bits