update IPv6 utils

src/packet/packet.cpp

@@ -13,6 +13,7 @@
 #include "udp_utils.h"
 #include "tcp_utils.h"
 #include "ipv4_utils.h"
+#include "ipv6_utils.h"
 
 #define likely(expr) __builtin_expect((expr), 1)
 #define unlikely(expr) __builtin_expect((expr), 0)
@@ -889,7 +890,7 @@ static inline const char *parse_ipv6(struct packet *handler, const char *data, u
     {
         return data;
     }
-    uint8_t next_proto = ((struct ip6_hdr *)data)->ip6_nxt;
+    uint8_t next_proto = ipv6_hdr_get_next_header((const struct ip6_hdr *)data);
     SET_LAYER(handler, layer, LAYER_TYPE_IPV6, sizeof(struct ip6_hdr), data, len);
 
     // TODO ipv6 fragment