I have been having this problem with "ping". If I "ping" a location that
doesn't exist, then "ping" just hangs and cannot be killed via "kill -KILL [pid]".
A little digression, so you understand the background ... The workstation I am
doing this from is connected to a Verizon router to their FIOS network. Now the
reason I mention this is that the router's DNS (via DHCP to my workstation) is
192.168.1.1, which I presume is forwarded from the router upstream to Verizon's
DNS caches. So if I type the URL http://something.that.doesnt.exist in my
browser, rather than getting a Hostname Not Found error (at the name resolution
level), it actually loads up a page saying "something.that.doesnt.exist" isn't
found and then I have a Yahoo set of search results on things matching the
broken hostname.
So all of this is normal ISP stuff: they actually resolve unknown addresses to
their own website (which is 90.242.140.21).
Ok, ending the digression ....
Back to the problem, so when I type
$ ping some.unknown.host
according to "ping", the hostname resolves to 90.242.140.21 (as per the
explanation above), but I cannot kill "ping". I tried "ping" with a limited
packet size and count so, in theory, "ping" would die on its own after 10
packets, such as:
$ ping some.unknown.host 50 10
but it still hangs rather than timing out. If I ping to some actual IP address
that is unresponsive (route-able to the last subnet, but dies on the floor at
the end), then I can kill via ctrl-c. My only solution to the hanging "ping" is
to kill the terminal window.
Any suggestions on:
- Why "ping" behaves this way?
- How to avoid this problem?
Thanks, in advance.
-FF
--
______________________________________________________________________
Frank Farance, Farance Inc. T: +1 212 486 4700 M: +1 917 751 2900
mailto:fr...@farance.com http://farance.com
Standards/Products/Services for Information/Communication Technologies
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
