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The original version was trying to workaround the > case where the build environment was running on old pre BPF > version of Glibc, but the target environment had BPF. > > Having own private (and divergent) version headers leads to future > problems when BPF definitions evolve. > > If the build infrastructure is so old that TC flower is not > supported, then the TAP device will build without any flow support. > > Signed-off-by: Stephen Hemminger > Simplification is good, but I hope it doesn't break too many platforms. Acked-by: Ferruh Yigit