Hangout 21 Feb 2019

IPv6 Fragment reviews which need testing:
- Eliminate KAME circular queues: D16847.
- Drop packets with overlapping fragments: D16850.
IPv6 modernization project: Wiki Page
- Julius proposed importing OpenBSD fragmentation regression test cases (see D17376). tjh@ is working on it.
- IP6 IDs (and IP IDs, maybe?): may use an insecure algorithm. Ideally, switch to some sort of per-host-pair hash?
  - Open PR by jtl@
Congestion window collapse: D17614 (review by lstewart@)
jtl@ to send patch to Richard for burst mitigation in the default stack
D18811: standardize on snd_recover (vs. sack_newdata). Reviewer: tuexen@, lstewart@.
D18624: RFC 6675 support. Actual functionality in D18985.
TCP reassembly code. tuexen@ will MFC. Review available in D18960.
CUBIC: Only invoking NewReno after_idle, not resetting ssthreash, not resetting epoch time: D18982, D18954, and D19118.
Richard brought up a PRR patch (based on Lars work). D18892. Needs review.
D19000 deal with a bug that the 1 byte occupied in the sequence number space by SYN segments results in a cwnd increase when acked. This bug exists only on the server side. tuexen@ and Richard are working on it.
Richard is working on burst mitigation. An initial version (WIP) is available as D19047.
Heads up: Hackathon on Aberdeen.

Should RTO.Initial be a sysctl variable? Result is yes. tuexen@ will implement it.
DCTCP in combination with CUBIC. How to implement this?