Hello, I am learning the skbuff workings in kenrel for that I added a fake header in TCP/IP with Fake header containing 2 fields of type int ipchksum and tcpchksum taken frpm upper layer and only copied to new header. I directly push it after IP header is added and thus sending packets to destination pc. At destination side i am able to receive application data(payload) indeed correctly in FTP transfer but how to display those 2 fields in kernel using printk? I am really stuck at this point please help me. Thanks in advance. regards, linux_lover __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html