openSUSE Factory 5 sec network delay

I installed a Factory branch of openSUSE from network, but I found some problems with network - before every action (downloading repositories, packages, etc.) there is a 5 seconds long waiting.

For example - I did a basic installation without X and it was very slow, because there was a waiting 5 secs before downloading every of more than 500 packages (so normal installation time + 500*5 secs).

I tried DHCP, manual network settings, other DNS server… but without success.

Thanks for any advice.

have you disabled IPv6?

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