Attendees:  rrs@, rscheff@, tuexen@, jtl@

====== Discussion ======
  * [[https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252913|PR 252913]]: tuexen@ got a tracefile and some information from Netflix; impacts 12, waiting for 13 to be released.
  * [[https://reviews.freebsd.org/D23230|D23230]]: ECN++, rscheff@ will investigate the sysctl interface. Still in progress.
  * [[https://reviews.freebsd.org/D28702|D28702]]: Planned for main, mid March. Still in progress, waiting for 13 release. rrs@ will review.
  * Lost retransmission detection: [[https://reviews.freebsd.org/D28931|D28931]] is an idea for doing SACK loss recovery in the base stack. We will plan to discuss the [[https://datatracker.ietf.org/doc/draft-scheffenegger-tcpm-lrd/|I-D]] next meeeting.
  * [[https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254333|PR 254333]]: Fixed by clean up of host cache code.
  * [[https://reviews.freebsd.org/D29515|D29515]]: Proposal to switch hash function used for host cache. rscheff@ will update to use a random salt and allow an administrator to re-salt with a sysctl
  * Support for TCP over UDP is up for [[https://reviews.freebsd.org/D29469|review]] and is planned to be committed to main after 13.0 is released. tuexen@ will do this.
    * RACK will be updated after TCP over UDP support has been committed. rrs@ will do this.
  * [[https://reviews.freebsd.org/D29411|D29411]]: PRR for ECN and congestion window reduction with %%NewReno%%. No plans to MFC.
    * [[https://reviews.freebsd.org/D29440|D29440]]: Do preparatory work to enable PRR for %%NewReno%%. Approved by tuexen@.
    * [[https://reviews.freebsd.org/D29441|D29441]]: Implement PRR for %%NewReno%%. Needs review.
  * [[https://reviews.freebsd.org/D29576|D29576]]: glebius@ proposes changes to SYN cache to avoid serializing on acquiring a write lock for the listen socket.
  * We had a discussion on the use of sockaddr_in on IPv6 sockets and mapped IPv4 addresses. We agreed to look at the code and try to standardize on a set of behavior for dealing with IPv4 addresses on IPv6 sockets which are not marked as IPv6-only. We will discuss this further in two weeks.
  * [[https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254725|254725]]: LRO panic. Peer ACKs up to last data byte. Peer SACKs FIN. snd_una is correct, but send buffer is empty. Not able to reproduce artificially. rscheff@ will ask reporter to try to reproduce.
  * tuexen@ reports on issue reported by NFS developer. We send a challenge ACK. Remote side sends a RST. We don't process the RST. The developer will re-run the test with debug messages enabled.

Next meeting: 22 April @ 1400 UTC