Hi, I'm trying to install Debian 13 on a system that (initially) only has IPv6 connectivity which it has to get from DHCP. There is no SLAAC nor Router Advertisements.
When I reach the "Configure the network" stage I tell it to automatically configure on interface eno1. I see it do a DHCPv6 request on my DHCP server and gain a lease. At this point I can ping the leased address from elsewhere on my network. I proceed and am asked for the system's hostname and domain name. As soon as the installer proceeds past this point, network connectivity dies. If I go to the menu and execute a shell, the eno1 interface is UP but not configured. If I go back to configuring the network and ask it to automatically configure again, I see a lease renewal and connectivity comes back, but again goes away after proceeding past hostname and domain name. If I leave the installer sitting on the dialog asking me for my hostname (or domain name) then connectivity remains working, so this is not a time-based phenomenon; it's deconfiguring the network as it moves through the questions. At first I thought the installer may be just deconfiguring the interface when it wasn't needing to do any network activity, but this is not the case; the next step is to attempt NTP and that times out due to having no connectivity. In order to complete the install I have to go back and statically configure the network with the same IPv6 address that would have been leased by DHCP. This is rather painful because the BMC in use does not allow paste, so I have to type a full 16 byte IPv6 address. I am not sure if it matters but the IPv6 address that is leased is inside the Unique Local Address space (fd00::/8) and the gateway address is fe80::1. Is this a known issue or is it some incompatibility with my DHCP server? I searched through debian-installer bugs for "dhcp" and didn't find anything promising. Thanks, Andy
