Question regarding duplicate fragment handling in DPDK IP reassembly library

[Samyak Jain]

Hi DPDK Community,

I am using DPDK 25.11 and evaluating the IP reassembly library
(librte_ip_frag).

During testing, I observed that duplicate fragments appear to cause reassembly failure and the fragment context gets invalidated.

I would like to know:

1. Is duplicate fragment handling intentionally unsupported in
   rte_ipv4_frag_reassemble_packet() / rte_ipv6_frag_reassemble_packet()?

2. Has there been any upstream discussion or patch to support
   duplicate fragments while still rejecting conflicting
   fragments?

3. Are there any recommended approaches for applications that need
   Linux-like duplicate fragment tolerance?

Any guidance would be appreciated.

Thanks & Regards,
Samyak Jain

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