ホストのドメイン省略時の複数ドメインの検索

サブドメインとメイン両方を簡易に表現したいが試した範囲では
searchにスペース区切りで複数書くのがリーズナブルか

# cat /etc/resolv.conf 
search priv.example.com example.com
nameserver 192.168.2.1

# nslookup -debug hoge
Server:         192.168.2.1
Address:        192.168.2.1#53

------------
    QUESTIONS:
        hoge.priv.example.com, type = A, class = IN
    ANSWERS:
    AUTHORITY RECORDS:
    ->  example.com
        origin = ns1.example.com
    ADDITIONAL RECORDS:
------------
** server can't find hoge.priv.example.com: NXDOMAIN
Server:         192.168.2.1
Address:        192.168.2.1#53

------------
    QUESTIONS:
        hoge.example.com, type = A, class = IN
    ANSWERS:
    ->  hoge.example.com
        internet address = 192.168.2.2
        ttl = 54
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
Non-authoritative answer:
Name:   hoge.example.com
Address: 192.168.2.2
------------
    QUESTIONS:
        hoge.example.com, type = AAAA, class = IN
    ANSWERS:
    AUTHORITY RECORDS:
    ->  example.com
        origin = ns1.example.com
    ADDITIONAL RECORDS:
------------

参考
https://man7.org/linux/man-pages/man5/resolv.conf.5.html

              The domain directive is an obsolete name for the search
              directive that handles one search list entry only.

ほー