It's in backports-5.4, but it wasn't ever merged. Upstream followed another approach, with flow offloading, which has much better performance. Drop this obsolete patch and refresh the kernel patches. Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com> Acked-by: Stijn Tintel <stijn@linux-ipv6.be> Acked-by: Felix Fietkau <nbd@nbd.name>