How to add kernel modules to Ubuntu 16.04 on PINE64+

[Taiki Bessho]

I just got started to use my PINE64+ 2GB model with Ubuntu server 16.04 distributed at the official wiki page of PINE64. My kernel is as follows:

Code:

$ uname -a
Linux pine64 3.10.105-0-pine64-longsleep #3 SMP PREEMPT Sat Mar 11 16:05:53 CET 2017 aarch64 aarch64 aarch64 GNU/Linux

I configured my PINE64 to be a VPN server on L2TP/IPsec protocol with strongSwan and xl2tpd, but the syslog said "not supported protocol" and some missing kernel modules are necessary. The same configuration works well on the other Ubuntu server 16.04 of mine, therefore the configuration must be correct.

I think missing kernel modules caused this problem as syslog said; the required modules for strongSwan are listed here.

My question is how to add these missing modules to my PINE64+ ?
#I'm a beginner in Linux kernel, so I'm not sure even whether it is possible.

I think many people may stack this problem like me when they try to set up a VPN server on PINE64.

Thank you in advance!

[MarkHaysHarris777]

Deleted duplicate thread;  please post only once.