> The iproute2 BPF-loader does not support BTF. I think upstream agrees > that it would be too much work to add (and maintain) it, so the current > plan[1] is to convert iproute2 to use libbpf instead. So I updated my iproute2 because I was initially getting an error like " Error fixing up map structure, incompatible struct bpf_elf_map used? Error fetching ELF ancillary data! Unable to load program " with the native iproute2 binaries, and thought it may be due to a header mismatch. > Why do you want to use 'tc' to load XDP? I was merely using the exsiting example in samples to try to understand this. If the existing example is misleading, it should be removed. > I actually think this is only a warning, and the program is actually > loaded... no I dont believe it is. if you insert a break in the script before it gets to cleanup, and try # ip netns exec ns2 bash # tc filter show dev vens2 it will not show any loaded filters. --Sowmini