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Anders reports that:
# nft add rule ip6 filter postrouting \
flow table acct_out \{ meta iif . ip6 saddr timeout 600s counter \}
while the opposite doesn't work:
# nft add rule ip6 filter postrouting \
flow table acct_out \{ ip6 saddr . meta iif timeout 600s counter \}
netlink_gen_flow_stmt() relies on the flow table key, that is expressed
as a set element. Use the set element key instead to skip the set
element wrap, otherwise get_register() abort execution:
nft: netlink_linearize.c:650: netlink_gen_expr: Assertion `dreg < ctx->reg_low' failed.
Reported-by: Anders K. Pedersen <akp@cohaesio.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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