[strongSwan] strongSwan and FireHOL - conflicting use of marks?

[Whit Blauvelt]

There's a well-detailed exploration of apparently conflicting use of the
Netfilter mangle table by strongSwan and FireHOL by unki at
https://github.com/firehol/firehol/issues/130.

Are there any opinions here on how to resolve that conflict without
impairing the functionality of either? With both increasingly used, it will
be good if any necessary workarounds in combining them can be documented.

Thanks,
Whit