本人自己写的raw socket收发UDP/Raw包的程序，演示了TTL的设置 当初弄懂UDP的伪头部跟UDP校验和的设置费了一点劲，所以敝帚自珍-I wrote it myself raw socket TX UDP/Raw packets procedures, demonstration of the original TTL settings understood UDP pseudo-head with UDP checksum and the installation costs a