[FS#493] strongSwan no known IPsec stack detected since switch to kernel 4.9

[LEDE Bugs]

The following task is now closed:

FS#493 - strongSwan no known IPsec stack detected since switch to kernel 4.9
User who did this - Felix Fietkau (nbd)

Reason for closing: Duplicate
Additional comments about closing: See FS#443

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=493