On Fri, Jan 23, 2015 at 07:10:57PM -0500, Boris Epstein wrote: > This makes two of us. I've done everything as you have described and it > simply does not work. Are you actually seeing VLAN tagged traffic, or is the cisco switch just providing a normal stream? At work we have hundreds of VLANs, but the servers don't get configured for this; we just configure them as normal; ie eth0. The network infrastructure does the VLAN decoding, the server doesn't have to. Try configuring the machine as if it was a real LAN and forget about the VLAN. If that doesn't work then what does 'tcpdump -i eth0' show you? -- rgds Stephen