Symptoms
Fast L4 proxy operates in TTL decrement mode. That means that for Fast L4 software-transformed flows (that is, no PVA acceleration) the system decrements TTL by 1 during the transform. In comparison, for the ePVA assisted flows, the system operates in preserve mode (no TTL change).
Impact
Inconsistent behavior on IP TTL handling between ePVA and tmm for Fast L4 flows: TTL is not decremented for ePVA assisted flows, but TTL is decremented for flows without hardware acceleration.
Conditions
For all ePVA assisted flows.
Workaround
Disable hardware acceleration to see TTL decrements.
