Maybe? Ony my work machine, which is and old Mac Mini running Monterey 12.7.6, typing: sysctl net.inet.tcp shows me, among many other things: net.inet.tcp.use_ledbat: 0 net.inet.tcp.ledbat_plus_plus: 1 net.inet.tcp.rledbat: 1 And also, I see this: https://github.com/apple-oss-distributions/xnu/blob/xnu-11215.61.5/bsd/netinet/tcp_rledbat.c Cheers, Michael > On 28 Jan 2025, at 18:03, Dave Taht via Bloat wrote: > > https://datatracker.ietf.org/doc/draft-irtf-iccrg-rledbat/ > -- > Dave Täht CSO, LibreQos > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat