{"action":"opened","issue":{"url":"https://api.github.com/repos/jmbredal/NAV/issues/271","repository_url":"https://api.github.com/repos/jmbredal/NAV","labels_url":"https://api.github.com/repos/jmbredal/NAV/issues/271/labels{/name}","comments_url":"https://api.github.com/repos/jmbredal/NAV/issues/271/comments","events_url":"https://api.github.com/repos/jmbredal/NAV/issues/271/events","html_url":"https://github.com/jmbredal/NAV/issues/271","id":201250631,"number":271,"title":"Disused prefixes aren't properly deleted from the database","user":{"login":"jmbredal","id":2187858,"avatar_url":"https://avatars.githubusercontent.com/u/2187858?v=3","gravatar_id":"","url":"https://api.github.com/users/jmbredal","html_url":"https://github.com/jmbredal","followers_url":"https://api.github.com/users/jmbredal/followers","following_url":"https://api.github.com/users/jmbredal/following{/other_user}","gists_url":"https://api.github.com/users/jmbredal/gists{/gist_id}","starred_url":"https://api.github.com/users/jmbredal/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jmbredal/subscriptions","organizations_url":"https://api.github.com/users/jmbredal/orgs","repos_url":"https://api.github.com/users/jmbredal/repos","events_url":"https://api.github.com/users/jmbredal/events{/privacy}","received_events_url":"https://api.github.com/users/jmbredal/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-01-17T11:22:29Z","updated_at":"2017-01-17T11:22:29Z","closed_at":null,"body":"As reported by a customer, prefixes that have fallen into disuse aren't always deleted by NAV.\n\nIt appears that the navtopology program will only delete disused prefixes if their associated VLAN is also removed. This isn't always the case, as prefixes may change, merge or split.\n\nAs discussed with the customer, the original code may be attempting to be careful about removing prefixes if we get into situations where collection of the router port data is failing for some reason, but this procedure is probably too careful.\n\nLikely, any prefix that isn't reserved or a scope prefix should be deleted as soon as no router port with that prefix can bee seen any more."}}
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