{"action":"created","issue":{"url":"https://api.github.com/repos/ntop/ntopng/issues/126","labels_url":"https://api.github.com/repos/ntop/ntopng/issues/126/labels{/name}","comments_url":"https://api.github.com/repos/ntop/ntopng/issues/126/comments","events_url":"https://api.github.com/repos/ntop/ntopng/issues/126/events","html_url":"https://github.com/ntop/ntopng/issues/126","id":101049436,"number":126,"title":"Local MAC addresses are seldom recognized when collecting tagged VLAN traffic","user":{"login":"PaulosV","id":4086023,"avatar_url":"https://avatars.githubusercontent.com/u/4086023?v=3","gravatar_id":"","url":"https://api.github.com/users/PaulosV","html_url":"https://github.com/PaulosV","followers_url":"https://api.github.com/users/PaulosV/followers","following_url":"https://api.github.com/users/PaulosV/following{/other_user}","gists_url":"https://api.github.com/users/PaulosV/gists{/gist_id}","starred_url":"https://api.github.com/users/PaulosV/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PaulosV/subscriptions","organizations_url":"https://api.github.com/users/PaulosV/orgs","repos_url":"https://api.github.com/users/PaulosV/repos","events_url":"https://api.github.com/users/PaulosV/events{/privacy}","received_events_url":"https://api.github.com/users/PaulosV/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-08-14T16:37:08Z","updated_at":"2015-08-15T11:48:57Z","closed_at":null,"body":"Right now I have Cisco monitoring port with about 5 different tagged VLANs (802.1q), connected to our monitoring server and traffic being analyzed by `ntopng Community v.2.0.150814`. (but this is an issue from stable v.2, at least)\r\n\r\nMost of the local IP addresses (from our assigned IP range in the same L2 subnet) have a bogus MAC address assigned (something like 04:00:00:00:00:00 - 24 hosts have this one right now; or 07:00:00:00:00:00), even though they're connected to the same L2 network and communicate without any issues. They are not behind any NAT or masqueraded, and the MAC address information is present in the network dumps. Addresses from both public and private IP ranges have the same problem. Seldom, though, it happens that a correct MAC is assigned. I didn't manage to see any obvious pattern.\r\n\r\nntopng is freshly compiled from source, today."},"comment":{"url":"https://api.github.com/repos/ntop/ntopng/issues/comments/131357708","html_url":"https://github.com/ntop/ntopng/issues/126#issuecomment-131357708","issue_url":"https://api.github.com/repos/ntop/ntopng/issues/126","id":131357708,"user":{"login":"PaulosV","id":4086023,"avatar_url":"https://avatars.githubusercontent.com/u/4086023?v=3","gravatar_id":"","url":"https://api.github.com/users/PaulosV","html_url":"https://github.com/PaulosV","followers_url":"https://api.github.com/users/PaulosV/followers","following_url":"https://api.github.com/users/PaulosV/following{/other_user}","gists_url":"https://api.github.com/users/PaulosV/gists{/gist_id}","starred_url":"https://api.github.com/users/PaulosV/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PaulosV/subscriptions","organizations_url":"https://api.github.com/users/PaulosV/orgs","repos_url":"https://api.github.com/users/PaulosV/repos","events_url":"https://api.github.com/users/PaulosV/events{/privacy}","received_events_url":"https://api.github.com/users/PaulosV/received_events","type":"User","site_admin":false},"created_at":"2015-08-15T11:48:57Z","updated_at":"2015-08-15T11:48:57Z","body":"@lucaderi You have it ;)"}}