verbose_f
verbose_f("unsupported public key algorithm: %s", pkalg);
verbose_f("gethostname: %s", strerror(errno));
verbose_f("invalid marker at %s:%lu", path, linenum);
verbose_f("truncated line at %s:%lu", path, linenum);
verbose_f("Connection closed by remote host");
verbose_f("banner line contains invalid "
verbose_f("banner line too long");
verbose_f("client sent invalid protocol identifier "
verbose_f("%s penalty table full, cannot penalise %s for %s", t,
verbose_f("%s key not found", sshkey_type(key));
verbose_f("user refused key");