This reverts https://git.kernel.org/pub/scm/linux/kernel/git/rw/nfs-utils.git/commit/?id=2c2c36c59fa1de2ff7fd28917e54700ecb39b730
and https://git.kernel.org/pub/scm/linux/kernel/git/rw/nfs-utils.git/commit/?id=2c2c36c59fa1de2ff7fd28917e54700ecb39b730

as openqa is still testing NFSv2
see https://progress.opensuse.org/issues/106679

--- nfs-utils-2.6.1.orig/utils/mount/configfile.c
+++ nfs-utils-2.6.1/utils/mount/configfile.c
@@ -71,7 +71,7 @@ struct mnt_alias {
 int mnt_alias_sz = (sizeof(mnt_alias_tab)/sizeof(mnt_alias_tab[0]));
 
 static const char *version_keys[] = {
-	"v3", "v4", "vers", "nfsvers", "minorversion", NULL
+	"v2", "v3", "v4", "vers", "nfsvers", "minorversion", NULL
 };
 
 static int strict;
--- nfs-utils-2.6.1.orig/utils/mount/stropts.c
+++ nfs-utils-2.6.1/utils/mount/stropts.c
@@ -1017,6 +1017,7 @@ static int nfs_try_mount(struct nfsmount
 	}
 
 	switch (mi->version.major) {
+		case 2:
 		case 3:
 			result = nfs_try_mount_v3v2(mi, FALSE);
 			break;
@@ -1247,14 +1248,6 @@ static int nfsmount_start(struct nfsmoun
 	if (!nfs_validate_options(mi))
 		return EX_FAIL;
 
-	/* 
-	 * NFS v2 has been deprecated
-	 */
-	if (mi->version.major == 2) {
-		mount_error(mi->spec, mi->node, EOPNOTSUPP);
-		return EX_FAIL;
-	}
-
 	/*
 	 * Avoid retry and negotiation logic when remounting
 	 */
--- nfs-utils-2.6.1.orig/utils/nfsd/nfsd.c
+++ nfs-utils-2.6.1/utils/nfsd/nfsd.c
@@ -226,6 +226,7 @@ main(int argc, char **argv)
 				}
 				/* FALLTHRU */
 			case 3:
+			case 2:
 				NFSCTL_VERUNSET(versbits, c);
 				break;
 			default:
@@ -250,6 +251,7 @@ main(int argc, char **argv)
 					minorvers = minorversset = minormask;
 				/* FALLTHRU */
 			case 3:
+			case 2:
 				NFSCTL_VERSET(versbits, c);
 				break;
 			default: