Commit
6337cbb33d4c3638124e9b5453a67e892a8cf9ce
by Pau Espin Pedrolconfigure.ac: Add arpa/inet.h to AC_CHECK_HEADERS
We use arpa/inet.h in several places in the code, so it's good to look
up for presence even if it's only to debug toolchain compatibility.
Change-Id: Ib2d1fb3efb1dcb429b511698691249c257e00720
