On Fri, Sep 16, 2022 at 10:21 AM Simon Burge <[email protected]> wrote: > > Ryota Ozaki wrote: > > > Hi, > > > > Are there any users of TCP Vestigial Time-Wait (VTW)? > > The feature is disabled by default and we need to explicitly > > enable via sysctl to use it. > > > > I just want to know if we should still maintain it. > > I wouldn't be unhappy if it just disappeared. It's totally > undocumented, and will also cause a panic on archs with larger cache > line size because it does some really funky incorrect math that I > stared at for a while then gave up on. > > erlite# sysctl -w net.inet.tcp.vtw.enable=1 > 15293.7939168] panic: kernel diagnostic assertion "n <= FATP_MAX / 2" failed: > file "../../../../netinet/tcp_vtw.c", line 218
Oh, that's bad... Thank you for telling me. ozaki-r
