diff options
Diffstat (limited to 'lib/ipaddr.h')
| -rw-r--r-- | lib/ipaddr.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/ipaddr.h b/lib/ipaddr.h index a96c9788bc..f2b75c1306 100644 --- a/lib/ipaddr.h +++ b/lib/ipaddr.h @@ -89,6 +89,13 @@ static inline char *ipaddr2str(const struct ipaddr *ip, char *buf, int size) return buf; } +#define IS_MAPPED_IPV6(A) \ + ((A)->s6_addr32[0] == 0x00000000 \ + ? ((A)->s6_addr32[1] == 0x00000000 \ + ? (ntohl((A)->s6_addr32[2]) == 0xFFFF ? 1 : 0) \ + : 0) \ + : 0) + /* * Convert IPv4 address to IPv4-mapped IPv6 address which is of the * form ::FFFF:<IPv4 address> (RFC 4291). This IPv6 address can then |