dns.name

apply_search(name, search_list, ndots) -> candidates

Expand a name with search list and ndots logic

If name is FQDN (trailing dot), returns it as-is (single candidate). Otherwise, counts dots in the name:

• If dots >= ndots: try as-is first, then append each search domain
• If dots < ndots: try search domains first, then as-is

The as-is form always gets a trailing dot appended.