I was able to come up with a patch that works in my environment by looking at some of the changes between 3.1 and 3.2. It seems that sizeof(tos_t) does not result in a valid setsockopt() argument, whereas sizeof(int) that was used in 3.1.x does. Heres the diff. --- src/ip/Qos.cci.orig 2012-12-28 17:23:17.000000000 -0800 +++ src/ip/Qos.cci 2012-12-28 17:21:56.000000000 -0800 @@ -5,7 +5,7 @@ Ip::Qos::setSockTos(const Comm::ConnectionPointer &conn, tos_t tos) { #ifdef IP_TOS - int x = setsockopt(conn->fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos_t)); + int x = setsockopt(conn->fd, IPPROTO_IP, IP_TOS, &tos, sizeof(int)); if (x < 0) debugs(50, 2, "Ip::Qos::setSockTos: setsockopt(IP_TOS) on " << conn << ": " << xstrerror()); return x; Also FWIW the Ip::Qos::setSockNfmark() function that is below this and similar to the TOS code might have the same problem? Hoping someone that can do something about it reads this. Thanks! -Nick On Fri, Dec 28, 2012 at 3:55 PM, Nick Rogers <ncrogers@xxxxxxxxx> wrote: > Heres some relevant errors from full debug log. > > 2012/12/28 15:46:35.165 kid1| fwdConnectStart: got outgoing addr > 0.0.0.0, tos 127 > 2012/12/28 15:46:35.169 kid1| Ip::Qos::setSockTos: setsockopt(IP_TOS) > on local=0.0.0.0 remote=[::] FD 42 flags=1: (22) Invalid argument > > It looks like setsockopt arguments are wrong for FreeBSD? > > On Fri, Dec 28, 2012 at 3:01 PM, Nick Rogers <ncrogers@xxxxxxxxx> wrote: >> Hi. I am new to this list and am trying to followup on the issue described here: >> >> http://www.squid-cache.org/mail-archive/squid-users/201211/0081.html >> >> I am also experiencing the exact same problem. >> >> Does anyone know if there has been any work/updates on fixing >> tcp_outgoing_tos in 3.2? >> >> I am running squid-3.2.3 under FreeBSD 8.3. I recently upgraded from >> squid 2.7.x. Everything works fine except for tcp_outgoing_tos (the >> TOS bit is not changed in the outbound requests). Downgrading back to >> 2.7 with almost the same configuration (adjusting for syntax changes) >> fixes the problem. >> >> Any help is greatly appreciated. >> >> -Nick