[mpls-linux-general] a question about SO_REUSEADDR opt on UDP HELLO socket and TCP listenning socket

[<zjh...@so...>]

hi,jim and all

In the code the setsockopt have been called to set the  SO_REUSEADDR opt on UDP HELLO socket and TCP listenning socket.I can't understand why so?

I have read  UNIX Networking Programing (written by W.Richard Stevens).There four reasons have been given for using SO_REUSEADDR opt .The code use the opt for which reason?

Wish your help!!
All thanks!

 your sincerely:
  zhangjh