{"action":"created","issue":{"url":"https://api.github.com/repos/GNS3/gns3-server/issues/201","labels_url":"https://api.github.com/repos/GNS3/gns3-server/issues/201/labels{/name}","comments_url":"https://api.github.com/repos/GNS3/gns3-server/issues/201/comments","events_url":"https://api.github.com/repos/GNS3/gns3-server/issues/201/events","html_url":"https://github.com/GNS3/gns3-server/issues/201","id":82299316,"number":201,"title":"Mac OS X: Ethernet NIO loops back send packets","user":{"login":"ehlers","id":896406,"avatar_url":"https://avatars.githubusercontent.com/u/896406?v=3","gravatar_id":"","url":"https://api.github.com/users/ehlers","html_url":"https://github.com/ehlers","followers_url":"https://api.github.com/users/ehlers/followers","following_url":"https://api.github.com/users/ehlers/following{/other_user}","gists_url":"https://api.github.com/users/ehlers/gists{/gist_id}","starred_url":"https://api.github.com/users/ehlers/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ehlers/subscriptions","organizations_url":"https://api.github.com/users/ehlers/orgs","repos_url":"https://api.github.com/users/ehlers/repos","events_url":"https://api.github.com/users/ehlers/events{/privacy}","received_events_url":"https://api.github.com/users/ehlers/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/GNS3/gns3-server/labels/bug","name":"bug","color":"fc2929"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/GNS3/gns3-server/milestones/10","html_url":"https://github.com/GNS3/gns3-server/milestones/1.3.4","labels_url":"https://api.github.com/repos/GNS3/gns3-server/milestones/10/labels","id":1098175,"number":10,"title":"1.3.4","description":"","creator":{"login":"noplay","id":345437,"avatar_url":"https://avatars.githubusercontent.com/u/345437?v=3","gravatar_id":"","url":"https://api.github.com/users/noplay","html_url":"https://github.com/noplay","followers_url":"https://api.github.com/users/noplay/followers","following_url":"https://api.github.com/users/noplay/following{/other_user}","gists_url":"https://api.github.com/users/noplay/gists{/gist_id}","starred_url":"https://api.github.com/users/noplay/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/noplay/subscriptions","organizations_url":"https://api.github.com/users/noplay/orgs","repos_url":"https://api.github.com/users/noplay/repos","events_url":"https://api.github.com/users/noplay/events{/privacy}","received_events_url":"https://api.github.com/users/noplay/received_events","type":"User","site_admin":false},"open_issues":3,"closed_issues":10,"state":"open","created_at":"2015-05-06T07:51:01Z","updated_at":"2015-05-29T14:10:05Z","due_on":null,"closed_at":null},"comments":2,"created_at":"2015-05-29T07:04:05Z","updated_at":"2015-05-29T14:10:30Z","closed_at":null,"body":"GNS3 1.3.3, OS: Mac OS X 10.9.5\r\n\r\nDuring testing the interconnection to an external device (https://community.gns3.com/thread/8695) I found a strange issue on Mac OS X with the Ethernet NIO.\r\n\r\nTopology:\r\n![nio_en0](https://cloud.githubusercontent.com/assets/896406/7877811/dc958f14-05df-11e5-975c-83496214c41b.png)\r\n\r\nAll packet send from the GNS3 side are looped back. It's easy to see by \"show cdp neighbor\", the router sees himself as it's neighbor.\r\n\r\nA wireshark trace within GNS3 sees all packets doubled, one time when it's send and a second time echoed back.\r\n![sniff_gns3](https://cloud.githubusercontent.com/assets/896406/7877847/4d966f1c-05e0-11e5-9fb6-aeb9a27e137d.png)\r\n\r\nA sniff on the ethernet link shows, that each send packet is really only once on the line.\r\n![sniff_en0](https://cloud.githubusercontent.com/assets/896406/7877893/c0fc4314-05e0-11e5-9cda-094ddf9ec6b2.png)\r\n\r\nThis doesn't happen in Linux, tested with Debian 8 (Jessie).\r\n\r\nIf this can't be fixed, because it's a \"feature\" in OS X, then the Ethernet NIO is hardly usable for me. This looped backed packets make it impossible to connect a switch to the Ethernet NIO. Luckily the TAP NIO works as expected.\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/GNS3/gns3-server/issues/comments/106818620","html_url":"https://github.com/GNS3/gns3-server/issues/201#issuecomment-106818620","issue_url":"https://api.github.com/repos/GNS3/gns3-server/issues/201","id":106818620,"user":{"login":"noplay","id":345437,"avatar_url":"https://avatars.githubusercontent.com/u/345437?v=3","gravatar_id":"","url":"https://api.github.com/users/noplay","html_url":"https://github.com/noplay","followers_url":"https://api.github.com/users/noplay/followers","following_url":"https://api.github.com/users/noplay/following{/other_user}","gists_url":"https://api.github.com/users/noplay/gists{/gist_id}","starred_url":"https://api.github.com/users/noplay/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/noplay/subscriptions","organizations_url":"https://api.github.com/users/noplay/orgs","repos_url":"https://api.github.com/users/noplay/repos","events_url":"https://api.github.com/users/noplay/events{/privacy}","received_events_url":"https://api.github.com/users/noplay/received_events","type":"User","site_admin":false},"created_at":"2015-05-29T14:10:30Z","updated_at":"2015-05-29T14:10:30Z","body":"I set milestone 1.3.4 because it's an actual bug, but I doubt we can fix it quick."}}