MAX_VNET_TUNNEL_PACKET_SZ
uint8_t packet_buf[MAX_VNET_TUNNEL_PACKET_SZ];
uint8_t buf[MAX_VNET_TUNNEL_PACKET_SZ] = { 0 };
uint8_t buf[MAX_VNET_TUNNEL_PACKET_SZ];
uint8_t pkt[MAX_VNET_TUNNEL_PACKET_SZ];