[$] iproute2 and libbpf: vendoring on the small scale

LWN's recent article on Kubernetes inDebian discussed the challenges of packaging a massive project withhundreds of dependencies. Many of the issues that arose there, however,are not limited to such projects, as can be seen in the ongoing discussionabout whether a copy of the relatively small libbpf library should be shippedwith the iproute2collection of networking tools. Fast-moving projects, it would seem,continue to feel limited by the restrictions imposed by the Linuxdistribution model.