0.1.5 ISO and onwards will no longer display this message. It's causing people to be confused that the problem is caused by rpcbind when the problem is something else.
Update: For the benefit of google users, to disable this message, edit the file /etc/netconfig, and disable these two lines (add a '#' character at the beginning), such that they now read as thus:
#udp6 tpi_clts v inet6 udp - -
#tcp6 tpi_cots_ord v inet6 tcp - -
Save the file, reboot the computer and you should no longer see the "rpcbind: cannot create socket for udp6" messages.