[ sorry for the delay -- lost use of one hand -- hunt and peck on the keyboard ] Hi Henrik Thanks very much for your note. I think that you mis-typed the RFC it's actually 3168 ... anyway. The ip TOS is now 4 bits, so the squid.conf.default ought to be changed to reflect 0 -> 63 rather than 0 -> 255 as is now indicated. Looking thru the archive, i noticed that you have mentioned on several occasions that meta-data marking (iptables/fwmark/nfmark) is not possible in squid. Does this remain the case? It would really nice if I could patch it mark hits/misses with fwmark -- marking this way allows an efficient hash table for my tc config. Cheers & Thanks Again Charles On Sat, 2005-02-19 at 16:22 +0100, Henrik Nordstrom wrote: > On Thu, 17 Feb 2005, lartc@xxxxxxxxxxxxxxxxxxx wrote: > > > has anyone noticed on fc3 a tos setsockopt() problem ?? > > > > if i try to set tos_outgoing to 0x8 it works just fine. set it to 0xEE > > and no tos marking happens. > > The ToS octet in TCP/IP has a long muddled history, but things have now > settled and these days it is 6 bits in size for DS (RFC2474) and the top > two bits is used by ECN (RFC3158) and can not be set by applications. > > For details see > > RFC2474 Definition of the Differentiated Services Field (DS Field) > RFC3158 The Addition of Explicit Congestion Notification (ECN) to IP > > RFC3158 has some quite interesting reading in section "22. Historical > Definitions for the IPv4 TOS Octet" and I recommend to start by reading > this. > > Regards > Henrik
