Limitations
The HR roaming support feature has the following limitations:
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Router Advertisement (RA) or Router Solicitation (RS) packets are charged and counted in default QFI PDR on the vUPF.
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No support for QER enforcement policing on the vUPF.
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No support for LI on the vUPF.
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UPF supports two GTPU endpoints at the ingress interface.
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Secondary PDR Optimization support will not be enabled in-between, for an existing call.
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After the upgrade, if the source interface type is not available in Create PDR.Then for existing calls, service selection will not happen based on interface type.
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N9, S5U, and S8U interface types are supported only on the same public IP and not on different IPs.
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Inter-PLMN handover works only with Secondary PDR optimization.
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If any Access-side PDR handling fails, then UPF reports only the failed PDR ID and not both PDRs (primary and secondary).