Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alternative‑port‑01
Watson Ladd <watsonbladd@gmail.com> Thu, 29 July 2021 15:02 UTC
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From: Watson Ladd <watsonbladd@gmail.com>
Date: Thu, 29 Jul 2021 08:01:45 -0700
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To: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
Cc: Miroslav Lichvar <mlichvar@redhat.com>, Dieter Sibold <dsibold.ietf@gmail.com>, NTP WG <ntp@ietf.org>, Danny Mayer <mayer@pdmconsulting.net>
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Subject: Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alternative‑port‑01
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On Thu, Jul 29, 2021, 12:45 AM Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de> wrote: <snip> > >> We see issues at Cloudflare with packet delivery on port 123. ISP > >> middleboxes are going to police by length, and an alternative port is > >> the way forward. There is much less policing on the alternative ports. > > > > Actually I'd think teching cloudflare would be better than changing the > > I had meant to write "teaching"... It's not our devices: it's middleboxes in ISP networks. We only find out from customer pcaps where one in four NTS packets makes it through. The policing is by length because that is what these boxes support. > > > > port. > > Otherwise: When do we change the port again? Don't screw up and put UDP amplifiers out, and the port will be fine. > > > >> > >> Sincerely, > >> Watson Ladd > >> > >>> > >>> ‑‑ > >>> Miroslav Lichvar > >>> > >> > >> > >> ‑‑ > >> Astra mortemque praestare gradatim > >> > >> _______________________________________________ > >> ntp mailing list > >> ntp@ietf.org > >> https://www.ietf.org/mailman/listinfo/ntp > > > > > > > > _______________________________________________ > > ntp mailing list > > ntp@ietf.org > > https://www.ietf.org/mailman/listinfo/ntp > > >
- [Ntp] WGLC on draft-ietf-alternative-port-01 Karen O'Donoghue
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Miroslav Lichvar
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Watson Ladd
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Danny Mayer
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Erik Kline
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Dieter Sibold
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Dieter Sibold
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Danny Mayer
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Miroslav Lichvar
- [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alternat… Ulrich Windl
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Miroslav Lichvar
- Re: [Ntp] WGLC on draft-ietf-alternative-port-01 Watson Ladd
- [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alternat… Ulrich Windl
- [Ntp] Antw: Antw: [EXT] Re: WGLC on draft‑ietf‑al… Ulrich Windl
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Danny Mayer
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Watson Ladd
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Danny Mayer
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Hal Murray
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Watson Ladd
- Re: [Ntp] Antw: [EXT] Re: WGLC on draft‑ietf‑alte… Danny Mayer
- [Ntp] Antw: Re: Antw: [EXT] Re: WGLC on draft‑iet… Ulrich Windl
- Re: [Ntp] Antw: Re: Antw: [EXT] Re: WGLC on draft… Miroslav Lichvar
- Re: [Ntp] Antw: Re: Antw: [EXT] Re: WGLC on draft… Harlan Stenn
- Re: [Ntp] Antw: Re: Antw: [EXT] Re: WGLC on draft… Miroslav Lichvar
- Re: [Ntp] Antw: Re: Antw: [EXT] Re: WGLC on draft… Doug Arnold