Static IP containers don't get DHCP DNS
LXC containers with static IPs skip DHCP entirely, so DNS must be set explicitly via `pct set <VMID> -nameserver <DNS_IP>` then reboot.
Without explicit DNS config, the container inherits the Proxmox host's DNS, which may not be what you want (e.g., not using Pi-hole).
Discovered during Pi-hole deployment (2026-02-26).
Affected entities:Pi-hole