https://www.netfilter.org/projects/nftables/manpage.html
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NAT STATEMENTS
 snat to address [:port] [PRF_FLAGS]
 snat to address - address [:port - port] [PRF_FLAGS]
 snat { ip | ip6 } to address - address [:port - port] [PR_FLAGS]
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MAP STATEMENT
 expression map { MAP_ELEMENTS }
Using the map statement.
 nft add rule ip nat postrouting snat to ip saddr map { 192.168.1.0/24 : 10.0.0.1, 192.168.2.0/24 : 10.0.0.2 }
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「snat to ip saddr map { 192.168.1.0/24 : 10.0.0.1, 192.168.2.0/24 : 10.0.0.2 }」
ここはNAT文の中にMAP文が含まれる形なのか?
MAP文は「address [:port] [PRF_FLAGS]」を置き換え可能なのか?