Using the Dynamic DNS Function
Dynamic DNS is a function which dynamically updates (registers and deletes) records (A record, AAAA
record, CNAME, and PTR record) managed by the DNS server. When a DNS server is part of the network
environment to which this printer, a DNS client, is connected, records can be dynamically updated using
this function.
Updating
Updating procedure varies depending on whether the printer IP address is static or acquired by DHCP.
• Dynamic update using message authentication (TSIG, SIG(0)) is not supported.
For a static IPv4 setting
If the IP address or host name is changed, the A and PTR records are updated. If the A record is
registered, CNAME is also registered. CNAMEs that can be registered are as follows:
• Ethernet and IEEE 802.11
RNPXXXXXX (XXXXXX represents the last 3 hexadecimal bytes of the MAC address)
However, if CNAME (PRNXXXXXX) overlaps with the host name, CNAME will not be registered.
For DHCPv4 settings
As a substitute for the printer, the DHCP server updates the record, and one of the following occurs:
• When the printer acquires the IP address from the DHCP server, the DHCP server updates the A
and PTR records.
• When the printer acquires the IP address from the DHCP server, the printer updates the A record,
and the DHCP server updates the PTR record.
If the A record is registered, CNAME is also registered. CNAMEs that can be registered are as follows:
• Ethernet and IEEE 802.11
RNPXXXXXX (XXXXXX represents the last 3 hexadecimal bytes of the MAC address)
For IPv6 settings
This machine updates the AAAA record and PTR record.
It also updates CNAME when the AAAA record is updated.
When a stateless address is newly set, it is automatically registered on the DNS server also.
• When the dynamic DNS function is not used, records managed by the DNS server must be updated
manually, if the printer's IP address is changed.
• To update the record using the printer, the DNS server has to have one of the following:
7. Appendix
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