nv_assert
void nv_assert(struct nv *nv, const char *namefmt, ...) __printflike(2, 3);
nv_assert(nv, "remoteaddr");
nv_assert(nv, "sourceaddr");
nv_assert(nv, "replication");
nv_assert(nv, "checksum");
nv_assert(nv, "compression");
nv_assert(nv, "timeout");
nv_assert(nv, "exec");
nv_assert(nv, "metaflush");