Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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I'm running NetWare SLES 10 sp3 with OES2 sp2. I was working with the folks at Novell to resolve an iPrint Print Manager problem.
During the process they wanted to perform a packet capture using tcpdump. While logged in as the root user the error no suitable device was found, and I received no data at all. This server is running on a VMWare Center. On other SLES 10 sp3 systems (residing on that same VMWre Center), tcpdump captures packets just fine. I inherited all of these servers, so I wasn't here during the initial build, but I'd make the guess that they were configured similarly. On a Server that I built recently, tcpdump works fine. On two of my Servers it does not, and gives the mentioned error.
It's not that big a deal, otherwise the Servers are communicating and working just fine. But, I'd like to get it working just because it's supposed to work. Students are off for the summer, so I have time to play.
My WAG is something is funky with the way the VM was set up. Check its ethernet device settings closely, and compare against a VM where tcpdump works normally. (Maybe in one case you bridged ethernet devices, and in another case you use NAT... for example.)
The modprobe packet command on a broke system and a working system both returned the no module found answer (or something like that).
This morning, as I was checking for newly released patches from Novell's site, I saw some new ones, installed them to all my Servers, and now tcpdump works like it ought to. So, maybe the installation of one of the patches "fixed" whatever was causing it not to work.