NFtables uses the INET table for NAT which combines IPv4 and IPv6.
Older systems might not have this option and use the ip table instead.
This adds a flag to fall back to the ip table style.
Signed-Off-By: Sven Auhagen <sven.auhagen@voleatech.de>
Right now the table names are hardcoded and do not integrate with an overall
firewall strategy.
NFTables has restrictions on how packets are evaluated against chains.
For example if multiple forward chains are evaluated with different prioity,
all packets that pass the first one will be reevaluated again in the second chain.
To have an overall firewall concept with miniupnpd it is necessary to use existing
tables and hence to configure them in miniupnpd.
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Thomas Bernard
Sven Auhagen
Tim Gates
Paul Chambers
Jardel Weyrich