Hi, Matt and all, I met an strange issue when deploying an IPv6 duplex system. I need your help to check if anything I missed during the deployment. I setup a container to run NAT64/DNS64 gateway on my test machine and 2 vms for a duplex system. Except the gateway and the localhost.yml I followed everything as a normal ipv4 duplex system setup. The controller-0 was unlocked and controller-1 can be installed via PXE, but when controller-1 finished installing and rebooted for the first time, mgmt network can only get the PXE IP from DHCP server. Attached /var/log/anaconda/journal.log. If I config the mgmt network on controller-1 with ipv6 IP manually, it can ping to controller-0 successfully. Is there any special thing I need to do for a IPv6 setup? And here's my localhost.yml: --- system_mode: duplex management_subnet: fd01::/96 management_start_address: fd01::2 management_end_address: fd01::50 management_multicast_subnet: ff08::1:1:0/124 cluster_host_subnet: fd02::/96 cluster_pod_subnet: fd03::/96 cluster_service_subnet: fd04::/112 external_oam_subnet: fd00::/96 external_oam_gateway_address: fd00::1 external_oam_floating_address: fd00::2 external_oam_node_0_address: fd00::3 external_oam_node_1_address: fd00::4 admin_username: admin admin_password: Local.123 dns_servers: - fd00::1 Thanks! Yan