• TransportProtocols
• 21Feb2019

Hangout 21 Feb 2019

Old Business

• 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.

New Business

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