static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0);
static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0);
static uint16_t cfg_udp_src = 1000;
static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0);
static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0);
static uint16_t cfg_udp_src = 1000;