Hi Peter, thanks for your help. I was too busy with some private requirements over the weekend to test your tunnel. During the week I am not at home, living in a hotel. I guess you'll understand that I will not use my main laptop which needed daily (and has some confidential stuff...) but would like to use a spare machine running i386-current (instead amd64-current) to test your udptunnel first. I noticed the broken connections with 'KabelDeutschland' at home via em0 and with wpi0 via T-Mobile and via the hotel-WLAN (I guess DTAG). Only at home and at the hotel a Fritz!Box (different models) is involved, not if I use my mobile phone. I will take a look at 'man netstat' and proceed as you suggested. Best,STEFAN Gesendet: Montag, 03. November 2014 um 12:17 Uhr Von: "Peter J. Philipp" <p...@centroid.eu> An: "Stefan Wollny" <stefan.wol...@web.de> Cc: openbsd-misc <misc@openbsd.org> Betreff: Re: still loosing connectionsOn Sun, Nov 02, 2014 at 08:41:44PM +0100, Stefan Wollny wrote: > > I think so. Your message is a million lines long, but I have no idea > > what the problem is. > > > > > Hi Ted, > > thank you for taking your time to reply. > > Long story short: "Sometimes" (=not deliberately repeatable) when > fetching a fresh snapshot and/or the sources afterwards and/or running > 'pkg_add -ui' connections to the internet are lost, entirely. This > happens with i386-current as well with amd64-current and with different > providers. > > I have to bring down all interfaces and flush routes prior to 'sudo > sh /etc/netstart' to get a connection - but even this does not always > work - a restart is then required. > > My problem is: I have no clue where to look or how to investigate > further into this issue. That is why I have described en d??tail what I > am doing and added as much information as possible. > > Can you (or s.o. else) give me hint where to look? I feel kind of lost... > > Thank's a lot! > > Cheers, > STEFAN > > > BTW: By now I use > OpenBSD 5.6-current (GENERIC.MP) #515: Sat Nov 1 20:55:07 MDT 2014 > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Hi Stefan, Did you say you used different providers? Did you try my udptunnel that I told you about in private mail? I can update the sources for you on my vps in amsterdam for you. If you've followed my problem it was with the FritzBox, still is because I couldn't restore my config on the FritzBox after downgrading, so I upgraded to 6.20 again. The udptunnel I wrote circumvents the bad networking associated with the fritzbox. Generally I think watching a netstat -s output for tcp is a good start. Look for retransmissions and hangups in the tcp section of that. A dmesg to the list would be helpful, as always add a description of what interfaces you use for default route. Also take a look at netstat -ni and look for hardware errors on the interface itself. There is input/output errors and collisions noted. So, netstat -s > netstat-s.`date +"%s"` before your downloads and the same during and after, see if anything changes using diff helps too. Good luck! -peter
