Hi there, I cannot build 3.1.11 with IP-Filter transparent support on Solaris 10 due to duplicate IPF header. My build option (working with 2.7 STABLE 9) is: ./configure '--disable-unlinkd' '--disable-ipv6' '-enable-ssl' '--enable-default-err-language=Russian-1251' --enable-err-languages='Russian-1251 English' '--enable-follow-x-forwarded-for' '--enable-delay-pools' '--enable-async-io=4' '--enable-storeio=ufs,diskd' '--prefix=/usr/local/squid' '--enable-external-acl-helpers=ldap_group' '--enable-ipf-transparent' 'CC=gcc' 'CFLAGS=-O2 -march=i686 -L/usr/local/lib -R/usr/local/lib -L/usr/local/ssl/lib -R/usr/local/ssl/lib -L/usr/openwin/lib -R/usr/openwin/lib -I/usr/local/rrdtool-1.4.2/include -I/usr/local/BerkeleyDB.4.7/include -I/usr/local/mysql/include' 'LDFLAGS=-L/usr/local/lib -R/usr/local/lib -R/usr/lib -L/usr/lib -R/usr/openwin/lib -L/usr/openwin/lib -L/usr/local/ssl/lib -R/usr/local/ssl/lib -L/usr/X11R6/lib -R/usr/X11R6/lib -L/usr/local/BerkeleyDB.4.7/lib -R/usr/local/BerkeleyDB.4.7/lib -L/usr/local/mysql/lib -R/usr/local/mysql/lib' 'CPPFLAGS=-I/usr/local/include -I/usr/local/ssl/include -I/usr/local/include/ncurses -I/usr/openwin/include -I/usr/local/rrdtool-1.4.2/include -I/usr/local/BerkeleyDB.4.7/include -I/usr/local/include/pcap -I/usr/local/include/freetype2' Configuration is successful, but make produces an error. Erorr is absent if I drop '--enable-ipf-transparent' configuration flag. Is it bug, or just feature? Why it is not clear documented? PS. Yes, I need to build transparent proxy with IP Filter. Thanks, bye.