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To allow for a batch to contain rules in arbitrary ordering, introduce NFTA_RULE_POSITION_ID attribute which works just like NFTA_RULE_POSITION but contains the ID of another rule within the same batch. This helps iptables-nft-restore handling dumps with mixed insert/append commands correctly. Note that NFTA_RULE_POSITION takes precedence over NFTA_RULE_POSITION_ID, so if the former is present, the latter is ignored. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>