check / check (push) Canceled after 0s
Looking up a nameserver's own address followed only the addresses a referral gave, so a nameserver whose zone is delegated without them, such as a.ntpns.org of pool.ntp.org, never resolved. The walk to a name's nameservers looked addresses up only when a referral gave none. Both now go through queryZone, which asks the nameservers whose addresses the referral gives first and, if none of them gives a usable reply, looks up and asks the others. maxLookupDepth stops lookups three deep, so delegations that point at each other still end; when the limit is why no address was found, the error is ErrLookupDepthExceeded, not "no address". Model: opus-5-5