According to Wikipedia [1], IPv6 hosts are required to always configure a link-local address, even if a global address is available. As far as I know, NM allows only one type of address (link-local / DHCP / manual) for an IPv4 connection (although multiple addresses may be configured in manual mode).
Would it be useful (or is it already possible), to allow parallel use of link-local + dhcp/manual for IPv4? Background: On our (embedded) product, we currently implement only IPv4 (nobody asked for IPv6 support yet). The user is responsible for choosing the address selection method according to his needs in order to communicate with our device. In future versions, we would like to add peer-to-peer communication between our devices which shall work independently of a proper IP address configured by the user. So if the device is configured for DHCP (factory default), discovery and communication between our devices shall work also for such cases, where no DHCP server is present. We try to avoid the "Microsoft" approach where link-local is used as a fallback if no DHCP server is responding. This would increase startup time and doesn't perform well if the DHCP server is connected later (due to the mobile nature of our equipment). regards, Christian [1] https://en.wikipedia.org/wiki/Zero-configuration_networking#Address_selection _______________________________________________________ Christian Eggers Software Engineer ARRI Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Arriweg 17, 83071 Stephanskirchen www.arri.com +49 8036 3009-3118 cegg...@arri.de Get all the latest information from www.arri.com, Facebook, Twitter, Instagram, LinkedIn and YouTube. Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRA 57918 Persönlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: München - Registergericht: Amtsgericht München - Handelsregisternummer: HRB 54477 Geschäftsführer: Dr. Matthias Erb (Chairman); Dr. Michael Neuhäuser; Stephan Schenk; Walter Trauninger
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