Yealink SIP-T4X Administrator's Manual page 209

the link. These announcements can allow the on-link connected IP phone to
configure itself with IPv6 address, as specified in RFC 4862.
Stateful DHCPv6: The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) has

been standardized by the IETF through RFC3315. DHCPv6 enables DHCP servers to
pass configuration parameters such as IPv6 network addresses to IPv6 nodes. It
offers the capability of automatic allocation of reusable network addresses and
additional configuration flexibility. This protocol is a stateful counterpart to ―IPv6
Stateless Address Autoconfiguration‖, and can be used separately or in addition to
the stateless autoconfiguration to obtain configuration parameters.
Note
SIP-T42G and SIP-T41P IP phones do not support the stateful DHCPv6 address assignment
method.
If the IP phone enables the SLAAC and DHCPv6 features simultaneously, the phone will
obtain the IP address via SLAAC and obtain other network parameters via DHCPv6.
Procedure
IPv6 can be configured using the configuration files or locally.
Configuration File
Local
To configure IPv6 address assignment method via web user interface:
1. Click on Network->Basic.
2. Select the desired address mode (IPv6 or IPv4&IPv6) from the pull-down list of
Mode (IPv4/IPv6).
<MAC>.cfg
Web User Interface
Configuring Advanced Features
Configure the IPv6 address
assignment method.
For more information, refer to
IPv6 on page 361.
Configure the IPv6 address
assignment method.
Navigate to:
http://<phoneIPAddress>/servl
et?p=network&q=load
193