preserve-parity (Source NAT Next Gen Services)
Statement introduced in Junos OS Release 19.3R2 on MX Series routers (MX240, MX480 and MX960) running Next Gen Services with the MX-SPC3 services card.
Assign a port with the same parity (even or odd) as the incoming source port. This feature is not available if you configure port-block allocation, and is not available for deterministic NAT.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.