Cannot create XFRM interface with linux-aarch64 kernel

[whale]

1. What's the problem?

try to run these cmds in sh as root:
$this->bbcode_second_pass_code('', '
#ip link add ipsec0 type xfrm dev eth0 if_id 0x1

Error: Unknown device type.
')

or with strongswan installed:
$this->bbcode_second_pass_code('', '

/usr/lib/strongswan/xfrmi -n "xfrm0" -i 0x1 -d eth0

received netlink error: Operation not supported (95)
failed to create XFRM interface

')

System info:
$this->bbcode_second_pass_code('', '
# uname -a
Linux pi-3 5.4.3-1-ARCH #1 SMP Sat Dec 14 02:29:18 UTC 2019 aarch64 GNU/Linux
')

2. The fix:

change https://github.com/archlinuxarm/PKGBUIL ... h64/config

line 961:
--- # CONFIG_XFRM_INTERFACE is not set
+++ CONFIG_XFRM_INTERFACE=y