Hi, I am trying to compile conntrack-tools on centos5. After successfully built and installed rpms of libnfnetlink and libnetfilter_conntrack, I get the following error when making conntrack_tools: In file included from /usr/include/sys/uio.h:24, from /usr/include/sys/socket.h:27, from /usr/include/libnfnetlink/libnfnetlink.h:19, from proxy.c:19: /usr/include/sys/types.h:62: error: conflicting types for 'dev_t' /usr/include/linux/types.h:13: error: previous declaration of 'dev_t' was here /usr/include/sys/types.h:67: error: conflicting types for 'gid_t' /usr/include/linux/types.h:27: error: previous declaration of 'gid_t' was here /usr/include/sys/types.h:72: error: conflicting types for 'mode_t' /usr/include/linux/types.h:15: error: previous declaration of 'mode_t' was here /usr/include/sys/types.h:77: error: conflicting types for 'nlink_t' /usr/include/linux/types.h:16: error: previous declaration of 'nlink_t' was here /usr/include/sys/types.h:82: error: conflicting types for 'uid_t' /usr/include/linux/types.h:26: error: previous declaration of 'uid_t' was here In file included from /usr/include/sys/types.h:133, from /usr/include/sys/uio.h:24, from /usr/include/sys/socket.h:27, from /usr/include/libnfnetlink/libnfnetlink.h:19, from proxy.c:19: /usr/include/time.h:105: error: conflicting types for 'timer_t' /usr/include/linux/types.h:22: error: previous declaration of 'timer_t' was here In file included from /usr/include/sys/types.h:220, from /usr/include/sys/uio.h:24, from /usr/include/sys/socket.h:27, from /usr/include/libnfnetlink/libnfnetlink.h:19, from proxy.c:19: /usr/include/sys/select.h:78: error: conflicting types for 'fd_set' /usr/include/linux/types.h:12: error: previous declaration of 'fd_set' was here In file included from /usr/include/sys/uio.h:24, from /usr/include/sys/socket.h:27, from /usr/include/libnfnetlink/libnfnetlink.h:19, from proxy.c:19: /usr/include/sys/types.h:235: error: conflicting types for 'blkcnt_t' /usr/include/linux/types.h:114: error: previous declaration of 'blkcnt_t' was he re make[1]: *** [proxy.o] Error 1 make[1]: Leaving directory `/home/t/conntrack-tools/src' make: *** [all-recursive] Error 1 I get the same results on 0.9.3 and the svn trunk any help would be greatly appreciated. Tom any