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--- Begin Message ---Hauke Mehrtens <[email protected]> writes: > On 10/8/25 20:53, Paul D wrote: >> https://www.iana.org/assignments/enterprise-numbers/assignment/apply/ >> Motivation: >> https://github.com/openwrt/odhcp6c/pull/73#issuecomment-3382596182 >> > > Hi, > > OpenWrt has a Organizationally unique identifier (OUI) from the IEEE. > > -------- > 20-05-B6 (hex) OpenWrt > 2005B6 (base 16) OpenWrt > 137 MONTAGUE ST STE 380 > Brooklyn NY 11201 > US > -------- > > I haven't fully understood why you need a DUID-EN from IANA. Could you > please explain it again. Looks like a misunderstanding of how DUID-LLT is supposed to work: https://github.com/openwrt/odhcp6c/pull/73#issuecomment-3382270139 If a DUID-EN can be generated once and stored forever, then so can a DUID-LLT. It does not matter if the device donating a mac address is moved to another host. The time makes the DUID unique. > Does this cost money? No, it doesn't. It's free. See https://www.rfc-editor.org/rfc/rfc9371.html But I guess the real cost is that OpenWrt would have to create a policy and internal registry of it's usage. Otherwise it would pretty soon be unusable because of collisions. An enterprise number can also be useful e.g for your own SNMP OIDs, RADIUS VSAs, and structured syslog. But personally I don't think DUID-EN is a very good usecase for OpenWrt. That's more something for a hardware vendor which already issue unique serial numbers for example. Then they can create a DUID with their enterprise number and the device serial number. OpenWrt would have to create an maintain a serial number registry or similar to be able to use DUID-EN. And there is absolutely no upside compared to the DUID-LLT. Just my .02 € Bjørn
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