| Configuring Network Settings | 56Parameter Description Configuration MethodIPv6 prefix((0~128)/IP prefixConfigure the IPv6 prefix.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Gateway Configure the IPv6 defaultgateway.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Static IPv6 DNS/Static DNSEnable or disable the static IPv6DNS feature.Note: the default value is Off.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Primary DNS/DNS primaryServer Configure the primary IPv6DNS server assigned to thesystem.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Secondary DNS/DNSSecondary Server Configure the secondary IPv6DNS server assigned to thesystem.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20DHCP OptionsThe DHCP information with labels carries with the corresponding network and other control information. Theinformation is called option. After connected to the network, the device will broadcast the DISCOVER request whichcarries the DHCP options of the network information. The DHCP server will replay the corresponding option afterreceiving the request.Note:For more information on DHCP options, refer to RFC 2131 or RFC 2132.• Supported DHCP Option of IPv4• DHCP Option 42, Option 2• DHCP Option 12Supported DHCP Option of IPv4The following table lists the DHCP options supported by Yealink VCS in IPv4 network.
