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[Discuss] Do Cheap NAT Routers "Fill up"?
- Subject: [Discuss] Do Cheap NAT Routers "Fill up"?
- From: kentborg at borg.org (Kent Borg)
- Date: Thu, 14 Apr 2016 14:32:52 -0400
[Forgive my earlier version of this e-mail, it was confusing. I hope this one is better.] A little Python is a dangerous thing... I was running a script that does a lot of http GETs to a remote machine with a fast network connection (linode), and after awhile it slows down, and I notice other things on my computer also slow down, things like a DNS lookup of google.com. I wrote an even simpler Python script that does a single packet ping of 188.8.131.52 and then does a dig of a list of well known names (things like google.com, yahoo.com, ...) and I ran it in a loop: it runs fast at first but then slows down, with some really long pauses. Pauses of predictable favorite lengths. This is over DSL. So I plugged in my phone and did a tether through it, and the simpler script behaves similarly: fast at first then pauses. I tried running the simpler script on a Linux on a different DSL network across the country and it worked better there, but still seemed to deteriorate. Then I tried running the simpler script on my linode machine and it ran fine there. The difference is the NAT? In each case where I am behind a NAT it starts fast and then slows down. On the one case where I had no NAT it ran fast. Do cheap NAT boxes not know how long to keep their translation records, and get plugged up? Thanks, -kb _______________________________________________ Discuss mailing list Discuss at blu.org http://lists.blu.org/mailman/listinfo/discuss
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