Discussion:
Ping Changes?
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David Kaye
2016-04-05 21:52:52 UTC
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I wrote a little program that pings a bunch of places domestically and
overseas, as well as pinging my router, modem, and other equipment on my
local network. It repeatedly pings about once every 10 seconds so I can
areas that are less stable, etc.

Lately I notice that the only domestic ping I get using my tool is Google's
DNS, 8.8.8.8. Nobody else in North America responds. Internationally, no
problem. I get Russia, Australia, the BBC, whatnot.

AND YET when I manually ping from shell, say Yahoo, Yahoo's ping server
responds just fine. Has there been some kind of change I'm not aware of
recently?
n***@sbcglobal.net
2016-04-06 19:21:58 UTC
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Post by David Kaye
I wrote a little program that pings a bunch of places domestically and
overseas, as well as pinging my router, modem, and other equipment on my
local network. It repeatedly pings about once every 10 seconds so I can
areas that are less stable, etc.
Lately I notice that the only domestic ping I get using my tool is Google's
DNS, 8.8.8.8. Nobody else in North America responds. Internationally, no
problem. I get Russia, Australia, the BBC, whatnot.
AND YET when I manually ping from shell, say Yahoo, Yahoo's ping server
responds just fine. Has there been some kind of change I'm not aware of
recently?
The Internet changing hands from US control? That's what's changed plus it might be leaning towards IPv6.
David Kaye
2016-04-07 03:04:02 UTC
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Post by n***@sbcglobal.net
The Internet changing hands from US control? That's what's changed
plus it might be leaning towards IPv6.
That's the cleverest you could come up with on short notice, I suppose. No,
it's very weird. When I ping manually, no problem. When I use my program
to ping they don't seem to work in the U.S. anymore, except for Google
8.8.8.8 and Craigslist. So very odd.
Rob Warnock
2016-04-07 11:02:38 UTC
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David Kaye <***@yahoo.com> wrote:
+---------------
| When I ping manually, no problem. When I use my program
| to ping they don't seem to work in the U.S. anymore,
| except for Google 8.8.8.8 and Craigslist. So very odd.
+---------------

How fast does your program send the pings?
Some sites blocks high-rate pings, treating
them as DoS attempts.

Try slowing down the rate in your program to
match the rate in whatever program you're
using "manually", typically one per second.

Although that might not help, since I just tried
pinging various sites I know at 10/sec [limited to
a count of 10], and it worked fine on all of them.


-Rob

-----
Rob Warnock <***@rpw3.org>
627 26th Avenue <http://rpw3.org/>
San Mateo, CA 94403
n***@sbcglobal.net
2016-04-07 19:34:04 UTC
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Post by David Kaye
Post by n***@sbcglobal.net
The Internet changing hands from US control? That's what's changed
plus it might be leaning towards IPv6.
That's the cleverest you could come up with on short notice, I suppose. No,
it's very weird. When I ping manually, no problem. When I use my program
to ping they don't seem to work in the U.S. anymore, except for Google
8.8.8.8 and Craigslist. So very odd.
Because I'm seeing listings in post source (including for here) than NOW include IPv6 addresses where they used to only include IPv4. See for yourself. You might try a ping6 which is the IPv6 ping. I haven't tried it myself yet but will a little later.
b***@MIX.COM
2016-04-08 03:25:12 UTC
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Post by David Kaye
I wrote a little program that pings a bunch of places domestically and
overseas, as well as pinging my router, modem, and other equipment on my
local network. It repeatedly pings about once every 10 seconds so I can
areas that are less stable, etc.
Lately I notice that the only domestic ping I get using my tool is Google's
DNS, 8.8.8.8. Nobody else in North America responds. Internationally, no
problem. I get Russia, Australia, the BBC, whatnot.
AND YET when I manually ping from shell, say Yahoo, Yahoo's ping server
responds just fine. Has there been some kind of change I'm not aware of
recently?
Why not compare packets and see what might be different in the two?

Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
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