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Feature: Support XDP frags in libxdp

Feature: Support XDP frags in libxdp: a task in LegoFlow-SWE (Harbor dataset). Loading an XDP program that uses the xdp.frags section (requiring the BPF F XDP HAS FRAGS flag) fails on devices with a large MTU (e.g., 9000). The kernel rejects the attachment with:

The task

Loading an XDP program that uses the `xdp.frags` section (requiring the `BPF_F_XDP_HAS_FRAGS` flag) fails on devices with a large MTU (e.g., 9000). The kernel rejects the attachment with:

Part of Lego-X/LegoFlow-SWE.