Registro Glue
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Un registro glue es un [[a-record|registro A]] o [[aaaa-record|registro AAAA]] especial almacenado en la zona padre (p. ej., .com) que proporciona la dirección IP de un [[nameserver|servidor de nombres]] dentro del mismo dominio al que sirve, evitando dependencias circulares en DNS.
Ejemplo
If ns1.example.com is a nameserver for example.com, the .com zone needs a glue record mapping ns1.example.com to an IP address.