Problems with IPVS

Mindaugas mind at bi.lt
Tue Oct 17 15:32:37 BST 2006



> Where can I find those files?

  Attached.

>>  A bit about my setup:
>>  packets comes in via GRE tunnel and arrives into interface called 
>> netwap. They are marked with fwmark  iptables on mangle table. Then they 
>> are marked as local using "ip rule add prio 1000 fwmark 1 table 100".
>
> This does not mark the packets but asks the FIB to check routing table 100 
> for all packets marked with fwmark 1. Subtle but important difference when 
> we try to talk about the same thing.

  Yes. You are definitely right.

>> And then they go through LVS and to the proxy server.
> Quite a setup.

  We are trying to be smart :).

>>  As another case I tried marked packets to pass via DNAT iptables target. 
>> Ethereal screen does not look perfect bu sites managed to open.
> What is a perfectly looking ethereal screen???

  All "green" screen. All the packets are ACKed in the order they arrived.

>> With LVS I could not open any web site.
> LVS does not open web sites.

  I mean when I configured access using ipvs.

>>  Web clients are Sony Ericsson phones so I cannot upgrade all of them. :)
> I own 4 of them and I would hate to fix yet another bug in their stack :).

  It's interesting - Sony or Ericsson are screwing things? :)

> ipvsadm -L -n -v

  There is no -v flag in ipvsadm 1.2.0

> ipvsadm -L -n -c

  I'm running everything using DNAT now. ipvs would be much better of 
course. And even now there are 6000 lines of output (wap1 9200:9201 udp 
traffic is still going through ipvs).

  Mindaugas

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