ipxlat device driver implementation proposed to netdev kernel mailing list
ipxlat is a new virtual network device for stateless IPv4/IPv6 packet translation (SIIT, RFC 7915). It is intended as a building block that lets Linux systems support every IPv6↔IPv4 connectivity scenario in RFC 6144. While the core translation is stateless, stateful NAT64 can be added simply with nftables/iptables SNAT or MASQUERADE rules.
The code is based on the Jool out-of-tree kernel module implementation. ipxlat is part of the IPv6 Monostack project
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This will be cool and useful, I currently use tayga as a clat with jool as the plat.