DragonFly bugs List (threaded) for 2008-07
DragonFly BSD
DragonFly bugs List (threaded) for 2008-07
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Re: Strange network hangs/delays with Firefox/Thunderbird/ssh

From: Michael Neumann <mneumann@xxxxxxxx>
Date: Wed, 30 Jul 2008 21:39:17 +0200

Matthew Dillon wrote:
:Yesterday everthing works like a charm. Then, today in a different :network, Thunderbird, Firefox3 and ssh seems to
:need around a minute to connect (resolve DNS or load a page, don't :know exactly), while w3m (text browser) doesn't show
:any of the problems (it immediatly shows the page). ping does work of :course too. Could that be related to threading issues?
:The only difference to yesterday (where everything worked perfectly) :is that today I use bge0 instead of rum0.
:I'll try it later in an again different network where I can both test :bge0 and rum0.
: Michael

Try turning off any automatic checksumming features on the interface.

    What you are describing typically occurs when a network interface
    starts dropping or mis-checksumming certain packets.

    Other possibilities include: long or fragmented packets being
    improperly blocked or erroring out.

Hm, it's very strange. "w3m" (a text browser) actually works like hell, while "fetch" doesn't work. When I open the same page (your Hammer patch diff for example) in w3m, it appears immediatly, while when I try to fetch it with "fetch", it gets stuck in

  #fetch -v http://apollo.backplane.com/DFlyMisc/hammer02.patch
  looking up apollo.backplane.com

and nothing further happens. So it seems to be a DNS problem.
But I thought they all are using the same resolver library.





This only happens in this local net here, regarless whether I use the wireless card or the built in ethernet. Other operating systems work fine (I tried FreeBSD and MacOSX).

Any further hints what this could be?



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