ALE M3-M5-M7-M8 DeskPhones Administrator Guide   
It configures the secondary IPv4 DNS server. 
Note: It works only if “DeviceNetworkIpStackMode” is set to IPv4, and 
"DeviceNetworkDhcpMode " is set to Static. 
Network → IP parameters → DNS2 
Menu → Advanced (default password: 123456) Setting → Network → IP Config → IPv4 
Settings → DNS2 
Note: If you change this parameter, the IP phone will reboot for the change to take effect. 
2.1.3 IPv6 Configuration 
To configure the network settings on the phone for an IPv6 network, you can set up an IP address for the 
phone by using SLAAC (ICMPv6), DHCPv6 or by manually entering an IP address. Ensure that your network 
environment supports IPv6. Contact your ISP for more information. 
When you enable both SLAAC and DHCPv6 on the phone, the server can specify the IP phone to obtain the 
IPv6 address and other network settings either from SLAAC or from DHCPv6. If the SLAAC server is not 
working, the IP phone will try to obtain the IPv6 address and other network settings via DHCPv6. 
The following table lists the parameters you can use to configure IPv6. 
DeviceNetworkIpv6DhcpMode 
It configures the Internet port type for IPv6. 
Note: It works only if “DeviceNetworkIpStackMode” is set to IPv6. 
Menu → Advanced (default password: 123456) Setting → Network → IP Config → IPv6 
Settings → IPv6 Mode 
Network → IP Parameters → IPv6 → DHCP Mode 
Note: Only the M8 phone supports the IPv6 configuration in phone web. 
It configures the IPv6 address. 
Note: It works only if “DeviceNetworkIpStackMode” is set to IPv6, and 
"DeviceNetworkIpv6DhcpMode " is set to Static. 
Menu → Advanced (default password: 123456) Setting → Network → IP Config → IPv6 
Settings → IP  
Network → IP Parameters → IPv6 → IP Address 
Note: Only the M8 phone supports the IPv6 configuration in phone web. 
DeviceNetworkIpv6PrefixLen