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Subject: Re: [PATCH net v6] net: xdp: account for layer 3 packets in
 generic skb handler
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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Thu, 20 Aug 2020 11:13:49 +0200

> It seems like if an eBPF program pushes on a VLAN tag or changes the
> protocol or does any other modification, it will be treated in exactly
> the same way as the L2 packet above by the remaining parts of the
> networking stack.

What will update the skb metadata if the XDP program changes the
wireguard header(s)?