So finally something relevant to this patch... On Wednesday 22 July 2020 23:48:19 Petr Menšík wrote: > On 7/22/20 3:44 PM, Pali Rohár wrote: > > I do not see any benefit why to complicate things just because "IPv6 > > addresses are many". I do not see nothing wrong on simple setup where > > device has one IPv6 address assigned by DHCPv6 server. > I think you are requesting breaking of DHCP definition RFCs. I see > nothing wrong with IPv6 assigned to MAC address. I think it is wrong, if > there are existing leases for the same address with different IAID.
The whole point of this patch is to make MAC --> IPv6 address assigning working. It means that IPv6 address must be leased to MAC address if assigning is based on MAC address and not on DUID/IAID. If user set in configure file that for MAC address AB:CD:EF:AB:CD:EF must be assigned IPv6 address FD::1 then user would expect that host with address AB:CD:EF:AB:CD:EF would get IPv6 address FD::1. Why host get different address, then why such option is even provided? User already express by this configuration that he is interested in such setup even if it does not have to be compliant with standards. Some people are saying that assigning IPv6 address based on MAC address is already violation of DHCPv6 RFC. Also dnsmasq provides support for leasing one IPv4 address to more MAC addresses. This is often used when computer has both ethernet and wifi interfaces and only one is used at the same time. dnsmasq then lease IPv4 address to the last MAC address which asked for it. This feature also violates DHCPv4 standard, but it is there as it is useful for lot of people. So why should be similar useful feature problematic for IPv6 when it is already provided for IPv4 in dnsmasq? Anyway, if violation of DHCPv6 RFC standard with this setup of leasing IPv6 address to MAC address statically is problematic, what about adding a new option which enables this behavior? -- Pali Rohár pali.ro...@gmail.com _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
