diff --git a/libc/include/netinet/in6.h b/libc/include/netinet/in6.h
index 7f3286a..879ac75 100644
--- a/libc/include/netinet/in6.h
+++ b/libc/include/netinet/in6.h
@@ -25,48 +25,47 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
 #ifndef _NETINET_IN6_H
 #define _NETINET_IN6_H
 
 #include <linux/in6.h>
 
-#define IN6_IS_ADDR_UNSPECIFIED(a)	\
-	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
+#define IN6_IS_ADDR_UNSPECIFIED(a) \
+  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[12]) == 0))
 
-#define IN6_IS_ADDR_LOOPBACK(a)		\
-	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
+#define IN6_IS_ADDR_LOOPBACK(a) \
+  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[12]) == ntohl(1)))
 
-#define IN6_IS_ADDR_V4COMPAT(a)		\
-	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
+#define IN6_IS_ADDR_V4COMPAT(a) \
+  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[12]) != 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[12]) != ntohl(1)))
 
-#define IN6_IS_ADDR_V4MAPPED(a)		      \
-	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
-	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
+#define IN6_IS_ADDR_V4MAPPED(a) \
+  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
+   (*(const uint32_t*)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
 
-#define IN6_IS_ADDR_LINKLOCAL(a)	\
-	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
+#define __bionic_s6_addr(a) ((const uint8_t*)(a))
 
-#define IN6_IS_ADDR_SITELOCAL(a)	\
-	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
+#define IN6_IS_ADDR_LINKLOCAL(a) \
+  ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0x80))
 
-/* RFC 4193. */
-#define IN6_IS_ADDR_ULA(a)	\
-	(((a)->s6_addr[0] & 0xfe) == 0xfc)
+#define IN6_IS_ADDR_SITELOCAL(a) \
+  ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0xc0))
 
-#define IN6_IS_ADDR_MULTICAST(a)	\
-	(((__const uint8_t *) (a))[0] == 0xff)
+#define IN6_IS_ADDR_MULTICAST(a) (__bionic_s6_addr(a)[0] == 0xff)
 
+#define IN6_IS_ADDR_ULA(a) ((__bionic_s6_addr(a)[0] & 0xfe) == 0xfc)
 
 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
@@ -75,27 +74,21 @@
 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08
 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 
-#define IPV6_ADDR_MC_SCOPE(a)	\
-	((a)->s6_addr[1] & 0x0f)
+#define IPV6_ADDR_MC_SCOPE(a) (__bionic_s6_addr(a)[1] & 0x0f)
 
-#define IN6_IS_ADDR_MC_NODELOCAL(a)     \
-	(IN6_IS_ADDR_MULTICAST(a) &&  \
-	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
-#define IN6_IS_ADDR_MC_LINKLOCAL(a)	\
-	(IN6_IS_ADDR_MULTICAST(a) &&  \
-	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
-#define IN6_IS_ADDR_MC_SITELOCAL(a)     \
-	(IN6_IS_ADDR_MULTICAST(a) &&  \
-	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
-#define IN6_IS_ADDR_MC_ORGLOCAL(a)     \
-	(IN6_IS_ADDR_MULTICAST(a) &&  \
-	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
-#define IN6_IS_ADDR_MC_GLOBAL(a)       \
-	(IN6_IS_ADDR_MULTICAST(a) &&  \
-	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
+#define IN6_IS_ADDR_MC_NODELOCAL(a) \
+  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
+#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
+  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
+#define IN6_IS_ADDR_MC_SITELOCAL(a) \
+  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
+#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
+  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
+#define IN6_IS_ADDR_MC_GLOBAL(a) \
+  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 
-#define IN6_ARE_ADDR_EQUAL(a, b)			\
-    (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
+#define IN6_ARE_ADDR_EQUAL(a, b) \
+  (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 
 #define INET6_ADDRSTRLEN 46
 
@@ -107,5 +100,4 @@
 
 #define ipv6mr_interface ipv6mr_ifindex
 
-
 #endif /* _NETINET_IN6_H */