On Tue, 15 Feb 2005, Dan Cox wrote:
I'm successfully using HTB + GRED to shape traffic based on the DSCP field. I would like to strip the DSCP and possibly replace it with normal ToS bits on egress traffic leaving my network. Leaving DSCP set is pointless, and could potentially cause problems with some ISPs that use DSCP internally I suppose. Setting ToS bits would seem ideal as most networks still honor it to varying degrees.
The problem is I can see no way of doing this. Since DSCP is needed in the qdiscs for shaping, it can't be mangled with iptables. According to the packet flow diagram, there doesn't appear to be any other opportunity to mangle the packets in this manor. Will I need to insert another router in the chain just to do this? :(
You can clone the GRED qdisc code and modify it to overwrite the DSCP bits.
-- Dan- _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
--- Catalin(ux aka Dino) BOIE catab at deuroconsult.ro http://kernel.umbrella.ro/ _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
