CTL_NET_IPv4_ADDR_t ctl_net_scan_dot_decimal_ip_addr(const char *str);
ctl_net_scan_dot_decimal_ip_addr parses the string pointed to by str as a a dotted-decimal IPv4 address and returns that address. If the string does not contain a valid IPv4 address, ctl_net_scan_dot_decimal_ip_addr returns an all-zero IP address.