On Tue, 2 Oct 2007, Herbert Xu wrote:
On Mon, Sep 24, 2007 at 11:44:19AM +0200, Krzysztof Oledzki wrote:
So, with DR mode, packet goes by the lo device (with bad checksum) and
then get redirected outside. Unfortunately, when it leaves host it has bad
checksum, too. :(
Did you check this by taking a tcpdump on an external host?
Yes.
Doing a local tcpdump doesn't work as tcpdump won't show the
correct checksum if checksum offload is enabled.
Indeed, I'm aware about this.
If it's really sending a bogus checksum then it's a bug in
LVS.
I'm not sure if we should call it a bug. LVS does not support such
configuration by default - it requires kernel patching. However, it worked
with older kernels so that's why I asked if it is possible to force full
TCP/UDP checksum calculation?
Thank you.
Best regards,
Krzysztof Olędzki
