Yealink SIP-T48G Administrator's Manual page 483

Parameters
Configures the secondary IPv6 DNS server when the IP address mode is configured
as IPv6 or IPv4 & IPv6, and the Internet (WAN) port type for IPv6 is configured as
Static IP Address, or and the Internet (WAN) port type for IPv6 is configured as
DHCP and Staic DNS is configured as Enabled.
Example:
network.ipv6_secondary_dns = 2026:1234:1:1:c3c7:c11c:5447:23a6
Note: If you change this parameter, the IP phone will reboot to make the change
take effect.
Web User Interface:
Network->Basic->IPv6 Config->Static IP Address->Secondary DNS
Phone User Interface:
Menu->Settings->Advanced Settings (default password: admin)
->Network->WAN Port->IPv6->Static IPv6 Client->IPv6 Sec.DNS
Or Menu->Settings->Advanced Settings (default password: admin)
->Network->WAN Port->IPv6->DHCP IPv6 Client->Staic DNS(Enabled) ->IPv6
Sec.DNS
network.ipv6_icmp_v6.enable
Description:
Enables or disables the IP phone to obtain IPv6 network settings via SLAAC
(Stateless Address Autoconfiguration) method.
0-Disabled
1-Enabled
Note: If you change this parameter, the IP phone will reboot to make the change
take effect. It is only applicable to SIP-T48G/T46G/T29G IP phones.
Web User Interface:
Network->Advanced->ICMPv6 Status->Active
Phone User Interface:
None
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).
3. In the IPv6 Config block, mark the DHCP or the Static IP Address radio box.
Configuring Advanced Features
Permitted Values
0 or 1
Default
1
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