Flow-Based and Packet-Based Processing
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Support for IPv6 tunnel (SRX Series and vSRX 3.0)— Starting in Junos OS Release 22.2R1, you can encapsulate IPv4 and IPv6 traffic over the IPv6 network.
The IPv6 tunnel helps IPv4 traffic traverse over the IPv6 network. You can use IPv6 tunneling in various features such as policy routing and preferential billing. For example, a set-top box that supports only IPv4 traffic can traverse the server over an IPv6 network.
[See show security flow session.]