14 Appendix
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Appendix
14
Important • If [IP Mode] is set to [IPv6], the IPv6-inIPv4-tunneling cannot be performed.
z
Communication problems may occur when multiple routers exist on the same subnet.
z
The network settings of the DNS server or a server used by the machine may cause
performance problems when using services in a dual stack environment.
z
Automatically set IPv6 addresses and IPv6 DNS server addresses may be unavailable
addresses.
"Unavailable IPv6 addresses" mean site-local addresses (fec0::) or addresses with the IPv6
documentation prefix (2001:db8::/32).
z
IPv4 DNS information can sometimes be used directly after machine startup if the IP
operation mode is Dual Stack, DNS information has been set for both IPv4 and IPv6, and
the machine is communicating with a device specified using an FQDN.
z
The address displayed as the machine's IP address may change.
For example, in Dual Stack mode, either the IPv4 address or IPv6 address may not be
displayed, or a different IPv6 address may be displayed.
z
When IPv6 is enabled and IPv4 is disabled on the machine, you cannot specify a storage
location for the Browse feature of the Scan to PC (SMB) function.
z
In the following cases, the machine may not be able to identify whether addresses are for
the same device, so may not be able to execute status check (lpq) or cancel (lprm)
commands for user print jobs executed by LPD.
- When simultaneously operating IPv4 and IPv6 addresses with the same host
- When simultaneously operating multiple IPv6 addresses with the same host
z
IPv6 addresses may not be correctly recorded on job logs. Use an IPv4 network for correct
logging.
z
When searching a device outside the router via SMB, directly specify the address.
Multicasting is supported only within a local link (FF02::1).
z
In an IPv6 network environment without a DNS server, authentication fails when a
computer name is specified in the SMB server settings for SMB authentication. Specify an
IPv6 address directly as the authentication server's computer name.
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