Add --compat option to *tables-nft and *-nft-restore commands

The flag sets nft_handle::compat boolean, indicating a compatible rule
implementation is wanted. Users expecting their created rules to be
fetched from kernel by an older version of *tables-nft may use this to
avoid potential compatibility issues.

Changes since v1:
- Expect short option '-C' in {ip,ip6,eb}tables-nft-restore command line
  parser
- Support -C/--compat in arptables-nft-restore, too
- Update man pages with the new flag

Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 1 insertions, 0 deletions

diff --git a/iptables/xshared.h b/iptables/xshared.h
index a200e0d6..f69a7b43 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -283,6 +283,7 @@ struct xt_cmd_parse {
 	int				line;
 	int				verbose;
 	bool				xlate;
+	bool				compat;
 	struct xt_cmd_parse_ops		*ops;
 };