All directories are now considered relative to the loaded swanctl.conf
file, in particular, when loading it from a custom location via --file
argument. The base directory, which is used if no custom location for
swanctl.conf is specified, is now also configurable at runtime via
SWANCTL_DIR environment variable.
Closesstrongswan/strongswan#120.
For inbound processing, it can be rather useful to apply the mark to the
packet in the SA, so the associated policy with that mark implicitly matches.
When using %unique as match mark, we don't know the mark beforehand, so
we most likely want to set the mark we match against.
The options control whether the DF and ECN header bits/fields are copied
from the unencrypted packets to the encrypted packets in tunnel mode (DF only
for IPv4), and for ECN whether the same is done for inbound packets.
Note: This implementation only works with Linux/Netlink/XFRM.
Based on a patch by Markus Sattler.
Use argument evaluation provided by settings_t instead of using strings
to enumerate key/values.
If section names contain dots the latter causes the names to get split
and interpreted as non-existing sections and subsections.
This currently doesn't work for connections and their subsections due to
the recursion.
When requiring unique flags for CHILD_SAs, allow the configuration to
request different marks for each direction by using the %unique-dir keyword.
This is useful when different marks are desired for each direction but the
number of peers is not predefined.
An example use case is when implementing a site-to-site route-based VPN
without VTI devices.
A use of 0.0.0.0/0 - 0.0.0.0/0 traffic selectors with identical in/out marks
results in outbound traffic being wrongfully matched against the 'fwd'
policy - for which the underlay 'template' does not match - and dropped.
Using different marks for each direction avoids this issue as the 'fwd' policy
uses the 'in' mark will not match outbound traffic.
Closesstrongswan/strongswan#78.
There was a direct call to load_key() for unencrypted keys that didn't
remove the key ID from the hashtable, which caused keys to get unloaded
when --load-creds was called multiple times.
Tobias Brunner