pfSense

pfSense_getall_interface_addresses returns v6 link local IPs minus the %interface off the end. That makes get_possible_listen_ips() return an incomplete address that fails to bind. That leaves Unbound (at a minimum) broken, as it needs the full IP to function.

For instance, an interface with fe80::250:56ff:fea7:bba2%vmx0 will have fe80::250:56ff:fea7:bba2 returned as its link local. Unbound fails to bind unless it's listed as "interface: fe80::250:56ff:fea7:bba2%vmx0". I suspect other services will have the same issue.