hi, when configuring squid-3.0.14 with --enable-linux-netfilter and i got this error: configure:27511: checking for linux/netfilter_ipv4/ip_tproxy.h configure:27565: g++ -c -g -O2 conftest.cpp >&5 conftest.cpp:33:1: warning: "USE_DISKIO_AIO" redefined conftest.cpp:30:1: warning: this is the location of the previous definition conftest.cpp:34:1: warning: "USE_DISKIO_DISKTHREADS" redefined conftest.cpp:31:1: warning: this is the location of the previous definition conftest.cpp:169:44: error: linux/netfilter_ipv4/ip_tproxy.h: No such file or directory configure:27572: $? = 1 configure: failed program was: can some one tell me how to solve. regards.