About network parameters assignment
In addition to IPv6 prefixes and IPv6 addresses, you can configure the following network parameters in an address pool:
A maximum of eight DNS server addresses.
One domain name.
A maximum of eight SIP server addresses.
A maximum of eight SIP server domain names.
You can configure network parameters on a DHCPv6 server by using one of the following methods:
Configure network parameters in a DHCPv6 address pool.
Configure network parameters in a DHCPv6 option group, and specify the option group for a DHCPv6 address pool.
Network parameters configured in a DHCPv6 address pool take precedence over those configured in a DHCPv6 option group.