Who's answering DNS PTR requests for your SSH client's IP? <br>ie: ssh from <a href="http://192.168.2.2">192.168.2.2</a> --> <a href="http://172.27.1.1">172.27.1.1</a>? <br> <br>SSH-Server# dig ns 168.192.in-addr.arpa
.<br>168.192.in-addr.arpa. 83195 IN NS <a href="http://blackhole-1.iana.org">blackhole-1.iana.org</a>.<br>168.192.in-addr.arpa. 83195 IN NS <a href="http://blackhole-2.iana.org">blackhole-2.iana.org
</a>.<br><br>I noticed today that lookups against the two above are timing out. I'm assuming that the 2 NS servers will return NULL if they ever do respond.<br><br><a href="http://www.iana.org/faqs/abuse-faq.htm#FAQonBlackholeServers">
http://www.iana.org/faqs/abuse-faq.htm#FAQonBlackholeServers</a><br><br> -- Cory<br><br><div><span class="gmail_quote">On 8/27/07, <b class="gmail_sendername">Kevin C. Smith</b> <<a href="mailto:kevin@linuxsmith.com">kevin@linuxsmith.com
</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Well, here's the odd part. Anything outside works fine, inside is slow.
<br>Those inside are listed in my /etc/hosts files, so no DNS is needed.<br>Thus, my confusion.<br><br># route<br>takes 20 seconds to complete<br># route -n<br>is instant<br><br><br>> Does route -n work faster? Typically, when I've had issues such as
<br>> these, it's DNS related. I'll usually cheat and add host entries in /<br>> etc/hosts for the hosts involved (in both the local and remote<br>> server) and it's all better :)<br>><br>> I've noticed this problem in particular on my "FreeBSD box with its
<br>> Aqua interface" when connecting to a network with no DNS / connectivity.<br>><br>> -Tom<br>><br>><br>><br>> On Aug 27, 2007, at 2:38 PM, Kevin C. Smith wrote:<br>><br>>> Any ideas why route would slow down? It all worked fine Friday.
<br>>><br>>> # route<br>>> Takes forever.<br>>> # ssh some_local_server<br>>> Takes forever.<br>>> # ssh some_external_server<br>>> Works as expected.<br>>><br>>><br>>> --
<br>>> Kevin C. Smith<br>>><br>>> _______________________________________________<br>>> Cialug mailing list<br>>> <a href="mailto:Cialug@cialug.org">Cialug@cialug.org</a><br>>> <a href="http://cialug.org/mailman/listinfo/cialug">
http://cialug.org/mailman/listinfo/cialug</a><br>><br>> _______________________________________________<br>> Cialug mailing list<br>> <a href="mailto:Cialug@cialug.org">Cialug@cialug.org</a><br>> <a href="http://cialug.org/mailman/listinfo/cialug">
http://cialug.org/mailman/listinfo/cialug</a><br>><br>><br>><br><br><br>--<br>Kevin C. Smith<br><br>_______________________________________________<br>Cialug mailing list<br><a href="mailto:Cialug@cialug.org">Cialug@cialug.org
</a><br><a href="http://cialug.org/mailman/listinfo/cialug">http://cialug.org/mailman/listinfo/cialug</a><br></blockquote></div><br>