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When both IPv4 and IPv6 are enabled and available, the following guidelines apply when determining
which stack to use:
• For outgoing traffic, the IP address (or resolved IP) in the server field - either IPv4 or IPv6 - will
determine which stack to be used.
• In general, most operations can be associated with one of the servers listed on the Basic
Network Settings page. However, for operations triggered by/dependent upon network status,
the phone must determine which server to use. For example, a special case like the "Network
down" can be ambiguous for server association. Because its primary purpose is to aid in
troubleshooting SIP registration issues, this case will be associated with the SIP registration
server.
• DNS entries with both IPv4 and IPv6 settings can be used to resolve FQDN entries. There are no
preferences with the order of the DNS queries.
• Pcap should include traffic for both stacks.
• Dual stack operations should be transparent to PC port traffic.
Note
• PnP is not supported on IPv6.
• VPN is not supported in IPv6 or PPPoE.
The network settings are also available as parameters in the configuration file. See Section 6.6.3
Network Settings ("network" Module).
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