Anno domini 2018 Wilhelm Schuster scripsit: Hi,
Can you give a scenario where I would want to use multiple dummy's instead of just adding/removing addresses to the loopback interface? I can't use a dummy interface for "real" packet processing since it just drops the packet. If the use case is to make addresses from loopback/dummy available on other interfaces, then does it matter if those addresses originally came from a single lo or multiple dummy's?
I use dummy interfaces for service IPs which are then distributed by BGP inside my networks. So I have three use cases: 1. real loopback (lo): Loopback IP (v4+v6) where v4 == router-ID in OSPF 2. dummy interface for local services ('srv') for services which are exclusivly run on this box. 3. dummy interface for anycasted services ('anycast_srv') for services where on instance is running on this box. This way it's easy to have different direct protocols in bird and easily tag, filter and/or announce prefixes within your network accordingly. real loopback IPs are part of the IGP (OSPF), both 2 and 3 are read by instances of protocol direct and distributed by (i)BGP. Best Max -- "Wer nicht mehr liebt und nicht mehr irrt, der lasse sich begraben." -- Johann Wolfgang von Goethe