There already is a union to reference the memory as an array of uints, so
just use it for IS_ADDR_UNSPECIFIED. All the others aren't used so we
can remove them.

Signed-off-by: Andy Grover <agro...@redhat.com>
---
 iscsiuio/src/uip/ipv6.h | 31 +++++--------------------------
 1 file changed, 5 insertions(+), 26 deletions(-)

diff --git a/iscsiuio/src/uip/ipv6.h b/iscsiuio/src/uip/ipv6.h
index 9e218fc..695f56e 100644
--- a/iscsiuio/src/uip/ipv6.h
+++ b/iscsiuio/src/uip/ipv6.h
@@ -142,32 +142,11 @@ struct mac_address {
        (memcmp((char *)a, (char *)b, sizeof(struct ipv6_addr)) == 0)
 
 /* Unspecified IPv6 address */
-#define IPV6_IS_ADDR_UNSPECIFIED(a)            \
-       ((*(u32_t *)(&(a)->addr8[0]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[4]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[8]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[12]) == 0))
-
-/* Loopback IPv6 address */
-#define IPV6_IS_ADDR_LOOPBACK(a)               \
-       ((*(u32_t *)(&(a)->addr8[0]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[4]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[8]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[12]) == 0x1))
-
-/* IPv4 compatible */
-#define IPV6_IS_ADDR_IPV4_COMPAT(a)            \
-       ((*(u32_t *)(&(a)->addr8[0]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[4]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[8]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[12]) != 0) &&  \
-        (*(u32_t *)(&(a)->addr8[12]) != 0x1))
-
-/* Mapped IPv4-IPv6 address */
-#define IPV6_IS_ADDR_IPV4_MAPPED(a)            \
-       ((*(u32_t *)(&(a)->addr8[0]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[4]) == 0) &&   \
-        (*(u32_t *)(&(a)->addr8[8]) == ntohl(0x0000ffff)))
+#define IPV6_IS_ADDR_UNSPECIFIED(a)    \
+       ((((a)->addr[0]) == 0) &&       \
+       (((a)->addr[1]) == 0) &&        \
+       (((a)->addr[2]) == 0) &&        \
+       (((a)->addr[3]) == 0))
 
 /* IPv6 Scope Values */
 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01   /* Node-local scope */
-- 
1.9.3

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