From: Florian Westphal
Date: Mon, 13 Mar 2017 16:24:28 +0100
> ip6_fragment, in case skb has a fraglist, checks if the
> skb is cloned. If it is, it will move to the 'slow path' and allocates
> new skbs for each fragment.
>
> However, right before entering the slowpath loop, it
ip6_fragment, in case skb has a fraglist, checks if the
skb is cloned. If it is, it will move to the 'slow path' and allocates
new skbs for each fragment.
However, right before entering the slowpath loop, it updates the
nexthdr value of the last ipv6 extension header to NEXTHDR_FRAGMENT,
to