diff --git a/ipv6.c b/ipv6.c
index d9dcc09..faf27ad 100644
--- a/ipv6.c
+++ b/ipv6.c
@@ -89,6 +89,7 @@
   size_t len_left;
   uint32_t checksum;
   int iov_len;
+  int i;
 
   if(len < sizeof(struct ip6_hdr)) {
     logmsg_dbg(ANDROID_LOG_ERROR, "ipv6_packet/too short for an ip6 header: %d", len);