1 files changed, 10 insertions, 2 deletions

diff --git a/util.h b/util.h
index c498a80..2d4e1ff 100644
--- a/util.h
+++ b/util.h
@@ -69,8 +69,16 @@
 #define MAC_ZERO		((uint8_t [ETH_ALEN]){ 0 })
 #define MAC_IS_ZERO(addr)	(!memcmp((addr), MAC_ZERO, ETH_ALEN))
 
-#define IPV4_IS_LOOPBACK(addr)						\
-	((addr) >> IN_CLASSA_NSHIFT == IN_LOOPBACKNET)
+#define IN4_IS_ADDR_UNSPECIFIED(a) \
+	((a)->s_addr == htonl(INADDR_ANY))
+#define IN4_IS_ADDR_BROADCAST(a) \
+	((a)->s_addr == htonl(INADDR_BROADCAST))
+#define IN4_IS_ADDR_LOOPBACK(a) \
+	(ntohl((a)->s_addr) >> IN_CLASSA_NSHIFT == IN_LOOPBACKNET)
+#define IN4_IS_ADDR_MULTICAST(a) \
+	(IN_MULTICAST(ntohl((a)->s_addr)))
+#define IN4_ARE_ADDR_EQUAL(a, b) \
+	(((struct in_addr *)(a))->s_addr == ((struct in_addr *)b)->s_addr)
 
 #define NS_FN_STACK_SIZE	(RLIMIT_STACK_VAL * 1024 / 8)
 #define NS_CALL(fn, arg)						\