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@@ -707,8 +707,9 @@ static int
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find_prev_fhdr(struct sk_buff *skb, u8 *prevhdrp, int *prevhoff, int *fhoff)
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{
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u8 nexthdr = ipv6_hdr(skb)->nexthdr;
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- u8 prev_nhoff = (u8 *)&ipv6_hdr(skb)->nexthdr - skb->data;
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- int start = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
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+ const int netoff = skb_network_offset(skb);
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+ u8 prev_nhoff = netoff + offsetof(struct ipv6hdr, nexthdr);
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+ int start = netoff + sizeof(struct ipv6hdr);
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int len = skb->len - start;
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u8 prevhdr = NEXTHDR_IPV6;
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