Re: xen 3 dom0 eats memory

[Patrick Scharrenberg <pittipatti@web.de>]

>> I changed the setup in the following way:
>> - added an ip address to the bridge (in another subnet (B))
>> - changed domU ip address to a net B address
>> - added masquerading for eth0 in the postrouting-chain in dom0
>
> What iptables rules do you use to set this up?
I used "iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE" for 
masquerading.

> Is the gateway address for domU the net B address interface you add to 
> the bridge?
Yes that right, i forgot to mention that.

I have one official address on dom0 eth0 and a privat class B network 
for the domU's.
The address used on the bridge is from this private network and the 
gateway for the domU's

> It's worth trying 'ethtool -K eth0 tx off' in domU to turn off 
> checksum offload, just in case that is causing problems.
Checksum offload is turned off in all domU's.

The problem only appears if the pakets are masqueraded. Pinging the 
gateway-address (the one on the bridge-if) or the dom0-eth0-address 
causes no memory consumption

Patrick