DNS/KnotResolver/config/modeについて、ここに記述してください。

{{{
 mode('strict' | 'normal' | ‘permissive’)
    Returns:	Change resolver strictness checking level.

    By default, resolver runs in normal mode. There are possibly many small adjustments hidden behind the mode settings, but the main idea is that in permissive mode, the resolver tries to resolve a name with as few lookups as possible, while in strict mode it spends much more effort resolving and checking referral path. However, if majority of the traffic is covered by DNSSEC, some of the strict checking actions are counter-productive.

    Glue type 	        Modes when it is accepted 	Example glue [1]
    mandatory glue 	strict, normal, permissive 	ns1.example.org
    in-bailiwick glue 	normal, permissive 	        ns1.example2.org
    any glue records 	permissive 	                ns1.example3.net

}}}