diff --git a/drivers/staging/r8188eu/core/rtw_br_ext.c b/drivers/staging/r8188eu/core/rtw_br_ext.c
index a7c67014dde0..8f5f2ef26056 100644
--- a/drivers/staging/r8188eu/core/rtw_br_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_br_ext.c
@@ -536,26 +536,29 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 		/*------------------------------------------------*/
 		/*         Handle IPV6 frame			  */
 		/*------------------------------------------------*/
-		struct ipv6hdr *iph = (struct ipv6hdr *)(skb->data + ETH_HLEN);
+		u8 header *h = skb->data;
+		struct ipv6hdr *iph = skb_pull(skb, ETH_HLEN);
 
-		if (sizeof(*iph) >= (skb->len - ETH_HLEN))
+		if (!iph)
 			return -1;
 
 		switch (method) {
 		case NAT25_CHECK:
-			if (skb->data[0] & 1)
+			if (h[0] & 1)
 				return 0;
 			return -1;
 		case NAT25_INSERT:
 			if (memcmp(&iph->saddr, "\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0", 16)) {
 				__nat25_generate_ipv6_network_addr(addr, (unsigned int *)&iph->saddr);
-				__nat25_db_network_insert(priv, skb->data + ETH_ALEN, addr);
+				__nat25_db_network_insert(priv, (void *)iph, addr);
+
+				if (iph->nexthdr == IPPROTO_ICMPV6) {
+					struct ipv6hdr *hdr = skb_pull(skb, sizeof(*iph));
+
+					if (!iph)
+						return 0;
 
-				if (iph->nexthdr == IPPROTO_ICMPV6 &&
-						skb->len > (ETH_HLEN +  sizeof(*iph) + 4)) {
-					if (update_nd_link_layer_addr(skb->data + ETH_HLEN + sizeof(*iph),
-								      skb->len - ETH_HLEN - sizeof(*iph), GET_MY_HWADDR(priv))) {
-						struct icmp6hdr  *hdr = (struct icmp6hdr *)(skb->data + ETH_HLEN + sizeof(*iph));
+					if (update_nd_link_layer_addr(hdr, skb_len(skb), GET_MY_HWADDR(priv))) {
 						hdr->icmp6_cksum = 0;
 						hdr->icmp6_cksum = csum_ipv6_magic(&iph->saddr, &iph->daddr,
 										be16_to_cpu(iph->payload_len),