Was having network related issue, I thought hamachi was at fault, after uninstalling i sorted out problem (hamachi was innocent), re-installed hamachi and tried to re-join already existing network.
Now it says network is full and I cannot rejoin it, however I was a member of that network earlier. Is there anything i could do to get my old credential and rejoin network or do I have to wait for host to kick old account out of network and add new account?