inet_dquad
inet_dquad(dq, sizeof(dq), fwdto->sin_addr.s_addr),
s = inet_dquad(dq, sizeof(dq), subnet);
plog(XLOG_INFO, "%s is on a remote network", inet_dquad(buf, sizeof(buf), addr));
extern char *inet_dquad(char *, size_t, u_int32_t);