Re: TOS problem

["Jörg Harmuth" <harmuth@mnemon.de>]

Marcin Giedz schrieb:
> Hello
> 
> A few days ago I wrote post about "Ip:Port REDIRECTION problem". Since that 
> time I have searched once again iptables HOW-TOs and find that one of the 
> solutions for my problem is changing TOS to other value. This is done by 
> simple rule:
> iptables -t mangle -A PREROUTING -p tcp --dport 4000 -j TOS --set-tos 0x10
> Next I redirect port 4000 from this router to another machine:
> iptables -t nat -A PREROUTING -p tcp --dport 4000 -j DNAT 192.168.49.60:80
> 
> This works OK on router when this rule is being ran but when I dump (tcpdump) 
> packtes on 192.168.49.60, "ToS" value is changed to 0x0. No any rules are 
> being set on 192.168.49.60 - simple machine. Why "ToS" is changing? What do I 
> wrong?

Your providing too little information, so nobody can help you - even if
he/she desired to do so.

Hmm, iptables isn't known for unreliability. Did you tcpdump on the
routers outgoing interface ? What about TOS there ?

I read your previous posting again, and your problem seems to be routing
or iptables (not really sure). Why do you think that setting TOS to
"Minimize-Delay" could help to solve your problems ?

Have a nice time,

Joerg