> -----Original Message----- > From: Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx] > Same ./configure options? Yes ./configure \ --enable-linux-netfilter \ --enable-async-io --with-pthreads --enable-storeio=ufs,aufs \ --enable-removal-policies=lru,heap \ --with-large-files \ --disable-auth \ --with-filedescriptors=65536 \ --enable-cache-digests > Any relevant difference in the config.log produced during build? I had a good dig around but couldn't see any differences I found this in a strace : [pid 11780] socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP) = 4 [pid 11780] setsockopt(4, SOL_IP, 0x13 /* IP_??? */, [1], 4) = 0 [pid 11780] bind(4, {sa_family=AF_INET6, sin6_port=htons(0), inet_pton(AF_INET6, "::2", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EADDRNOTAVAIL (Cannot assign requested address) [pid 11780] close(4) = 0 [pid 11780] write(2, "2010/02/04 10:21:55| FATAL: http("..., 862010/02/04 10:21:55| FATAL: http(s)_port: TPROXY support in the system does not work. ) = 86 So sounds like something related to IPv6 ? Michael.