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nsupdate is a computer network maintenance utility used by network administrators to request the name server of a DNS zone to update its database. The name server might be local to a domain or, with appropriate authentication and permission provided by DNSSEC, an internet name server.
BIND 8 and later supports this feature.
This example removes the nameserver address record for oldhost from domain example.com and replaces it with a new address record with a 24 hour time to live (86,400 seconds). The new host's IP address is 192.168.254.117.
# nsupdate > server ns.mydns.com > update delete oldhost.example.com. A > update add newhost.example.com. 86400 A 192.168.254.117 > send
- Linux nsupdate man page
- nsupdate: Quick and Painless Dynamic DNS
- NSUPDATE HOWTO by Stef Caunter, Feb 2003. Updated Jan 28, 2005.
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