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Description of problem:
/proc/fs/nfsd/versions shows suported v2 version. But actually it doesn't.

[root@hp-dl385g10-02 ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.57.el7.x86_64
[root@hp-dl385g10-02 ~]# uname -r
3.10.0-931.el7.x86_64
[root@hp-dl385g10-02 ~]# cat /proc/fs/nfsd/versions 
+2 +3 +4 +4.1 +4.2
[root@hp-dl385g10-02 ~]# mount localhost:/exports nfs  -o vers=2
mount.nfs: Protocol not supported
[root@hp-dl385g10-02 ~]#

nfs-utils-1.3.0-0.54.el7 doesn't have this issue.

[root@hp-dl385g10-02 ~]# cat /proc/fs/nfsd/versions 
-2 +3 +4 +4.1 +4.2
[root@hp-dl385g10-02 ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.54.el7.x86_64

I'm not sure if it's a regression issue or expected. But I will firstly mask it as regression issue.

Version-Release number of selected component (if applicable):
nfs-utils-1.3.0-0.57.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. start nfs service and cat /proc/fs/nfsd/versions
2.
3.

Actual results:


Expected results:


Additional info: