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Note: It works only if “LocalEnetcfgIpstack” is phone to IPv6, and " 
LocalEnetcfgIpv6Mode " is phone to Static. 
Menu->Advanced (default password: 123456)Setting->Network->IP Config->IPv4 
Settings-> Router 
It configures the primary IPv6 DNS server. 
Example: 
DmEnetcfgDns1v6= 3036:1:1:c3c7:c11c:5447:23a6:256 
Note: It works only if “LocalEnetcfgIpstack” is phone to IPv6, and " 
LocalEnetcfgIpv6Mode " is phone to Static. 
Menu->Advanced (default password: 123456)Setting->Network->IP Config->IPv6 
Settings-> DNS1 
It configures the secondary IPv6 DNS server. 
Example: 
DmEnetcfgDns2v6= 3036:1:1:c3c7:c11c:5447:23a6:256 
Note: It works only if “LocalEnetcfgIpstack” is phone to IPv6, and " 
LocalEnetcfgIpv6Mode " is phone to Static. 
Menu->Advanced (default password: 123456)Setting->Network->IP Config->IPv6 
Settings-> DNS2 
 
If you change this parameter, the IP phone will reboot to make the change take effect. 
 
The IP phone can obtain IPv4-related parameters in an IPv4 network via DHCP option. 
 
Note: For more information on DHCP options, refer to RFC 2131 or RFC 2132. 
 
Topics 
DHCP Option 66/67, Option 43  
DHCP Option 42 
DHCP Option 12 
DHCP Option 42 
DHCP Option 67 
DHCP Option 6 
DHCP Option 132