[strongSwan] EAP-GTC with macOS app

[Laurens Vets]

Hello Tobias,

>> Is it possible to use EAP-GTC with the StrongSwan macOS app?
> 
> Yes, the plugin is enabled.  But it is not included in the default
> plugin list that's used by charon-xpc (which is hard-coded for some
> reason [1]).  You could try setting `charon-xpc.load` in
> /usr/local/etc/strongswan.conf to the current list plus eap-gtc.
> 
> Regards,
> Tobias
> 
> [1]
> https://git.strongswan.org/?p=strongswan.git;a=blob;f=src/frontends/osx/charon-xpc/charon-xpc.c;hb=HEAD#l189

I do not seem to have a /usr/local/etc/strongswan.conf file. Can I just 
create it?