[ewg] [Bug 1856] NFS unable to register lockd RPC for IPv6

[Jeff Becker]

Hi all. I spent some time this week looking into this bug.

When NFS modules are probed, the following error occurs:
svc: failed to register lockdv1 (errno 97).

Initial debug shows that the IPv4 lockd RPC services are started without issue,
but all IPv6 lockd's fail.  

I see this on SLES10sp2 and all RHEL5's (even running the 2.6.30 kernel), but
this issue is not seen on SLES11.  I believe this is an issue with IPv6 support
in the nfs-utils, but more investigation is needed.


The problem is that IPV6 support in NFS requires a modern portmapper
that supports protocol 4 (rpcinfo shows what protocol portmapper
supports). Jon Mason confirmed that RHEL5.2, RHEL5.3, RHEL5.4, and
SLES10sp2 all only have portmap v2 support as part of the distro.

So the question is: Do we need IPV6 support for NFS in the backports?
Neither Jon nor I think so. Also, people are always free to try a more
modern portmapper if they like. Neil Brown maintains it at:

http://neil.brown.name/portmap/

Not sure about rpms though.

Thoughts? Can I close the bug as "wont fix" ?

Thanks.

-jeff