e4104854c3
FreeBSD's is presently 46 bytes. CID 1422869 warns that it can get overrun in if_attach() in copying if_xname which is IF_NAMESIZE bytes (32). This breaks ABI, but BeOS did not have sockaddr_dl, it is only a modern-GCC ABI break. Since most applications assume that sockaddr_dl is variable-length and is null-terminated, as well as not used very often, hopefully this will require relatively few rebuilds.