[strongSwan] Strongswan 5 on Mac Mountain Lion

Tobias Brunner tobias at strongswan.org
Fri Sep 7 15:07:06 CEST 2012

Hi Claude,

> I've tried to install strongswan on my Macbook using the howto on your
> homepage :
> http://wiki.strongswan.org/projects/strongswan/wiki/MacOSX
> Strongswan complains about not finding any known IPsec stack.
> Has there something changed with Mac OS ? Do I need to set other
> configure options ?

No, this message was always logged.  But as the last message says it can
simply be ignored.  It's just starter trying to (crudely) detect the
available IPsec stack, which only works with the Linux NETKEY and Klips
stacks - there is no code to explicitly detect the FreeBSD or Mac OS X
stacks.  Therefore, starter complains on these systems but due to the
enabled kernel-pfkey and kernel-pfroute plugins it should still work as
expected.  Just as a reminder, strongSwan as a client currently has some
serious limitations on BSD based systems.  For instance, there is still
no support for virtual IP addresses.


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