For complete information on the SonicOS implementation of IPv6, see About IPv6.
The ping tool includes a Prefer IPv6 networking option.
When pinging a domain name, it uses the first IP address that is returned and shows the actual pinging address. If both an IPv4 and IPv6 address are returned, by default, the firewall pings the IPv4 address.
If the Prefer IPv6 networking option is enabled, the firewall will ping the IPv6 address.
