I have an IPtables matching as -m policy --dir out --pol ipsec --mode tunnel --tunnel-src 1.1.1.2 --tunnel-dst 1.1.1.1. I know that this matching works with nftables in compatible mode as xt "policy", but I need to use the nftables syntax for this, in order to only use nft and backup from that.
Also in nftables v0.9.3 (Topsy) it doesn't support the compatible mode xt "policy". I've also tried the ipsec out ip saddr 1.1.1.2 ip daddr 1.1.1.1 but it didn't seem to work with neither this version nor nftables v1.0.9 (Old Doc Yak #3) as expected.