netdev - [iproute2] a 'ip rule ...' bug?

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Date:	Fri, 26 Mar 2010 20:15:30 +0800
From:	thomas yang <lampsu@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	netdev@...r.kernel.org
Subject: [iproute2] a 'ip rule ...' bug?

in  /etc/iproute2/rt_dsfield
...
# Newer RFC2597 values
0x28	AF11
0x30	AF12
0x38	AF13
...

---in   ip  man page ---
ip rule add - insert a new rule

tos TOS
dsfield TOS
    select the TOS value to match.
---

[root@...alhost ~]# ip rule add dsfield 0x28 table 200
Error: argument "dsfield" is wrong: Failed to parse rule type

why???
how to match 'dsfield' ?

[root@...alhost ~]# ip rule add tos 0x28 table 200
RTNETLINK answers: Invalid argument

(My OS is Fedora 11 :  kernel-2.6.30.10-105.2.23.fc11.i586 ,
iproute-2.6.29-2.fc11.i586 ;
on my another linux box ( Fedora 7)   'ip rule'  also has the same
problem  to match  tos and dsfield. )

--
Tom
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