Hellow, i'm trying to run the example program of chapter-8 of book by Eric Johnson, but getting the following error's during compilation: Compiling for bridging-latency.list... C:\IXP1200_Programming CD\Chapter08\bridging-latency.c(51): error : intrinsic data buffer "hashInputSrc_93$1$1" cannot be read C:\IXP1200_Programming CD\Chapter08\bridging-latency.c(66): error : intrinsic data buffer "hashInputDst_93$1$1" cannot be read i have even checked "ixp.h" file and there too first parameter to teh hash func. is the input value.... and also cd anyone tell me how can i extract the destination & source ip adress frm the received pkt's....i have the starting adress of sdram where tht pkt. is stored??? i was tring out this.... where buf_handle is the starting adress iphead is the pointer to a structure which has 2 unsigned integer as members.. sdram_read(__declspec(sdram_read_reg) *iphead,volatile __declspec(sdram) * (buf_handle + 2) ,1,queue_default,ctx_swap); but this code is also giving an error.... \Study\Project_IXP\test_nitin\Chapter05\receive.c(206): error : expected an expression actually i want to extract src & dest. IP address alongwd. the port numbers.....and not able to do tht......if anyone of u know ...do help me out Regards, Nitin Makhija