[Bugs] [Bug 1593651] New: gnfs nfs.register-with-portmap issue with ipv6_default

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1593651

            Bug ID: 1593651
           Summary: gnfs nfs.register-with-portmap issue with ipv6_default
           Product: GlusterFS
           Version: mainline
         Component: build
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: atumball at redhat.com
                CC: bugs at gluster.org



Description of problem:

Compile with IPV6_DEFAULT:
$ gluster v set rep nfs.disable off
$ gluster v set rep nfs.register-with-portmap on
$ mount.nfs 192.168.1.102:/rep /mnt # => successfully as expected
$ mount.nfs [fe80::20c:29ff:feb9:fc0a%eth0]:/rep /tmp/nfs # => successfully as
expected
$ umount /mnt
$ umount /tmp/nfs
$ gluster v set rep nfs.register-with-portmap off
$ mount.nfs 192.168.1.102:/rep /mnt # => failed as expected
mount.nfs: requested NFS version or transport protocol is not supported
$ mount.nfs [fe80::20c:29ff:feb9:fc0a%eth0]:/rep /tmp/nfs # should failed but
successfully

The root cause is that, we missed rpcsvc_program_unregister_rpcbind6 in
nfs_program_unregister_portmap_all function

Version-Release number of selected component (if applicable):
master

How reproducible:
100%


Additional info:
Migration from https://github.com/gluster/glusterfs/issues/463 (as it was a bug
rather than the feature).

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