Charon refuses to make use of algorithms IDs from the private space
for unknown peer implementations [1]. If you chose to ignore and violate
that section of the RFC since you *know* your peers *must* support those
private IDs, there's no way to disable that behavior.
With this commit a strongswan.conf option is introduced which allows to
deliberately ignore parts of section 3.12 from the standard.
[1] http://tools.ietf.org/html/rfc7296#section-3.12
Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
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