/usr/share/crypto-policies/FUTURE
NameSizeModeActions
bind.txt1240644editdlrm
gnutls.txt5290644editdlrm
java.txt6570644editdlrm
krb5.txt1070644editdlrm
libreswan.txt2010644editdlrm
libssh.txt10650644editdlrm
nss.txt3470644editdlrm
openssh.txt9750644editdlrm
opensshserver.txt13440644editdlrm
openssl.txt1650644editdlrm
opensslcnf.txt5800644editdlrm
Edit: /usr/share/crypto-policies/FUTURE/libreswan.txt (201B)
conn %default ikev2=insist pfs=yes ike=aes_gcm256-sha2_512+sha2_256-dh19+dh20+dh21+dh15+dh16+dh18,chacha20_poly1305-sha2_512+sha2_256-dh19+dh20+dh21+dh15+dh16+dh18 esp=aes_gcm256,chacha20_poly1305