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From: Daniel Sercaianu <sdan@terranet.ro>
To: lartc@vger.kernel.org
Subject: [LARTC] NAT & IMQ
Date: Sat, 10 Aug 2002 17:11:32 +0000	[thread overview]
Message-ID: <marc-lartc-102899956121469@msgid-missing> (raw)


I have the following problems:
I cannot shape the ip xxx.xxx.xxx.xxx when I do SNAT or MASQUERADE with
them. Otherwise when I remove these two iptables lines the shaping works
perfectly.

It is very important for me to shape the xxx.xxx.xxx.xxx ip and not the
yyy.yyy.yyy.yyy. When I tried to shape yyy.yyy.yyy.yyy, it worked.

What rules should be added to make this possible?


My iptables rules are:

iptables -A PREROUTING -t mangle -s xxx.xxx.xxx.xxx -j MARK  --set-mark 1
iptables -A POSTROUTING -t nat -s xxx.xxx.xxx.xxx -j SNAT --to  zzz.zzz.zzz.zzz -o eth4



iptables -t mangle -I PREROUTING -j IMQ
ip link set imq0 up


ip rule shows the following output:

32764:  from zzz.zzz.zzz.0/24 lookup ew
32765:  from all fwmark        1 lookup ew
32766:  from all lookup main
32767:  from all lookup default




My tc + htb rule look like this:

/sbin/tc qdisc add dev imq0 root handle 1: htb default 200 r2q 3
/sbin/tc class add dev imq0 parent 1:0 classid 1:1 htb rate 100Mbit ceil 100Mbit burst 2k prio 5

/sbin/tc filter add dev imq0 parent 1:0 protocol ip prio 5 handle 1: u32 divisor 256

/sbin/tc class add dev imq0 parent 1:1 classid 1:2 htb rate 512kbit ceil 512kbit burst 2k prio 5
/sbin/tc qdisc add dev imq0 parent 1:2 handle 10: sfq quantum 1514b perturb 10
/sbin/tc filter add dev imq0 parent 1:0 protocol ip prio 5 u32 match ip dst xxx.xxx.xxx.xxx flowid 1:2


/sbin/tc filter add dev imq0 parent 1:0 prio 5 handle ::1 u32 ht 800:: \
  match ip nofrag \
  offset mask 0x0F00 shift 6 \
  hashkey mask 0x00ff0000 at 8 link 1:



Daniel Sercaianu
Terranet Virtual Media
sdan@terranet.ro
GSM +40 788 837723


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             reply	other threads:[~2002-08-10 17:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-10 17:11 Daniel Sercaianu [this message]
2002-08-11 13:39 ` [LARTC] NAT & IMQ Patrick McHardy
2002-08-11 13:44 ` Patrick McHardy
2002-08-11 14:53 ` Daniel Sercaianu

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