St���phane : The fact that "showmount" has problems suggests this is a different bug. My guess is that there is a problem at the network level, not the NFS level. Are you able to use "tcpdump" to capture the network traffic while attempting "showmount" and mount? If so, please create a new bug and attach the packet capture. Please add me <nfbrown@suse.com> to the CC, or post to this bug and mention the bug number. Thanks.