ipv6_addr_equal
static inline bool ipv6_addr_equal(const struct in6_addr *a1,
#define ipv6_addr_equal(a, b) ((a).s6_addr32[0] == (b).s6_addr32[0] && \
static int ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2)