Bug#283107: telnet-connections to some hosts fail

[Jurij Smakov <jurij@wooyd.org>]

On Mon, 25 Apr 2005, Raoul Borenius wrote:

> But how about the kernel from kernel.org? Everything seems fine with
> that one.
>
> We have some more UltraIIs, but they are in production use at the moment
> so we can't play with those. I did some testing a few weeks ago when
> the problem first showed up and found it on all Ultras with onboard hme.
>
> Just to be shure I just tried kernel-image-2.4.27-2-sparc64 (2.4.27-2) on
> one of our POP-Servers and the telnet-session hangs again...
>
> The thing is, that not all telnet-connections fail:
>
> - telnet to Linux-Host (try 'telnet mailgw1 25'): works
> - telnet to Solaris-Host (try 'telnet esslingen'): works
> - telnet to Ascend MAX4000 Access-Server (m-nas1): fails
> - telnet to Cisco 7200 VXR (try 'telnet ol-gw'): fails

Right, I was able to figure out that these bad checksum messages are 
completely bogus (they are also produced by a tcpdump when I run it on my 
Ultra5 and telnet to it). So that's not really it :-(. At the moment I am 
out of ideas. I'll try to build a pristine kernel tomorrow and make a 
comparison between tcpdump output in these two cases.

Best regards,

Jurij Smakov                                        jurij@wooyd.org
Key: http://www.wooyd.org/pgpkey/                   KeyID: C99E03CC