關於error: ‘htons’ was not declared in this scope

環境:ubuntu10.10

程式目的:利用原始通訊端PF_PACKET和SOCK_RAW,擷取IP等資料socket(PF_PACKET,SOCK_RAW,htons(ETH_P_IP))

問題:在編譯時間出現 error: ‘htons’ was not declared in this scope的錯誤

查了下有人說 htons包含在netinet/in.h檔案中,

1　加#include<netinet/in.h>後編譯,出現

/usr/include/netinet/in.h:34: error: conflicting declaration ‘IPPROTO_IP’

/usr/include/linux/in.h:26: error: ‘IPPROTO_IP’ has a previous declaration as ‘<anonymous enum> IPPROTO_IP’

.....等許多類似的錯誤

錯誤原因好像是與之前的某個檔案定義的重複定義發生了衝突

２　將原先有的<linux/in.h>屏蔽之後,編譯通過