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Re: An Ounce of Prevention

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On Tue, 18 Jun 2019, Andy Smith wrote:

> What happens if you try to ping something? Like:

It is the ping failures that give me the most angst, since I am 
one of those people who, almost the first thing they'll do, if 
you sit them down at a computer keyboard, is try to ping 
somebody. I noticed that linode.com returned pings in a fairly 
decent fashion, but godaddy.com and jtan.com returned none.

All I have to do here is click my KVM switch and set the other 
unix system I have to the test. Those last two mentioned hosts 
are commercial for-profit ventures, and are almost always "up," 
as was shown by my *bsd system.

I was also interested to note that linode returned pings in ipv6 
mode. Switching to 'ping -4' ended any return of pings from 
linode. That was the sort of thing that made me think my 
"networking" was "not working."

And it's not lookup issues either, since what I see with Stretch 
is like this:

PING linode.com(2600:3c00::22 (2600:3c00::22)) 56 data bytes
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=1 ttl=51 time=63.4 ms
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=2 ttl=51 time=55.5 ms
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=3 ttl=51 time=56.4 ms
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=4 ttl=51 time=55.6 ms
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=5 ttl=51 time=55.8 ms
64 bytes from 2600:3c00::22 (2600:3c00::22): icmp_seq=6 ttl=51 time=55.9 ms
^C
--- linode.com ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5008ms
rtt min/avg/max/mdev = 55.544/57.151/63.482/2.844 ms

--and--

PING godaddy.com (208.109.192.70) 56(84) bytes of data.

--- godaddy.com ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3051ms

(That dotted four is one of godaddy's mail servers.)

In the middle of all this apparent network confusion, I said to 
myself "Oh, the heck with it..." and started my faithful trusty 
alpine mail system, which certainly requires network services. 
It's been running like a charm here on my new Stretch, which is 
sort of how it always runs, and I am typing on it right now and 
am about to send this overlong excursion.

Thank you

-- 
These are not the droids you are looking for.

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Thread

An Ounce of Prevention Bob Bernstein <poobah@ruptured-duck.com> - 2019-06-17 20:30 +0200
  Re: An Ounce of Prevention Greg Wooledge <wooledg@eeg.ccf.org> - 2019-06-17 20:40 +0200
    Re: An Ounce of Prevention Tixy <tixy@yxit.co.uk> - 2019-06-17 20:50 +0200
      Re: An Ounce of Prevention Tixy <tixy@yxit.co.uk> - 2019-06-17 21:00 +0200
        Re: An Ounce of Prevention Tixy <tixy@yxit.co.uk> - 2019-06-17 21:00 +0200
    Re: An Ounce of Prevention Bob Bernstein <bob@fanatick.org> - 2019-06-17 22:00 +0200
      Re: An Ounce of Prevention Bob Bernstein <poobah@ruptured-duck.com> - 2019-06-18 02:50 +0200
        Re: An Ounce of Prevention Andy Smith <andy@strugglers.net> - 2019-06-18 03:00 +0200
          Re: An Ounce of Prevention Bob Bernstein <bob@fanatick.org> - 2019-06-18 03:50 +0200
            Re: An Ounce of Prevention Andy Smith <andy@strugglers.net> - 2019-06-18 04:40 +0200
              Re: An Ounce of Prevention Bob Bernstein <bob@fanatick.org> - 2019-06-18 06:30 +0200
                Re: An Ounce of Prevention <tomas@tuxteam.de> - 2019-06-18 10:20 +0200
                Re: An Ounce of Prevention Richard Hector <richard@walnut.gen.nz> - 2019-06-18 10:40 +0200
                Re: An Ounce of Prevention Andy Smith <andy@strugglers.net> - 2019-06-18 13:20 +0200
                Re: An Ounce of Prevention <tomas@tuxteam.de> - 2019-06-18 13:40 +0200
                Re: An Ounce of Prevention Bob Bernstein <bob@fanatick.org> - 2019-06-18 17:40 +0200
  Re: An Ounce of Prevention Joe <joe@jretrading.com> - 2019-06-17 21:50 +0200
  Re: An Ounce of Prevention andreimpopescu@gmail.com - 2019-07-02 11:20 +0200

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