Using the recently added libbpf tc API worked fine for us in v0.4.0. After updating libbpf and syncing with master branch, we get the following error: libbpf: Kernel error message: Exclusivity flag on, cannot modify I found that commit a1bd8104a9f1c1a5b9cd0f698c886296749a0ce9 is causing this problem, and removing the NLM_F_EXCL resolves the issue. Is this the expected behavior and I'm doing something wrong?