Question about TCP/IP

[MarylandenyChu]

Hi,     
 I'd like to apply for "Fully Integrate lwIP" part this year. I noticed that in last year's idea list, this part is performed as another way: making a own TCP/IP implementation. I don't know why we change the direction to make fully integrate lwIP.
Does it because that it seems very hard to finish? Can I have the answers? Thanks!
初炳享Chu Bingxiang哈尔滨工程大学计算机科学与技术学院College of Computer Science and Technology in Harbin
Engineering University