lookup SOA record w/o TSIG if initial SOA lookup w/ TSIG fails due to TSIG err. Required for nsupdate to discover the zone when using a server which is forwarding updates but doesn't share the secret.
lookup SOA record w/o TSIG if initial SOA lookup w/ TSIG fails due to TSIG err. Required for nsupdate to discover the zone when using a server which is forwarding updates but doesn't share the secret.