diff --git a/share/man/man9/VOP_COPY_FILE_RANGE.9 b/share/man/man9/VOP_COPY_FILE_RANGE.9
--- a/share/man/man9/VOP_COPY_FILE_RANGE.9
+++ b/share/man/man9/VOP_COPY_FILE_RANGE.9
@@ -28,8 +28,8 @@
 .Os
 .Sh NAME
 .Nm VOP_COPY_FILE_RANGE
-.Nd copy a byte range from one file to another or within one file
-in a single file system
+.Nd copy a byte range within a file or from one file to another in a single
+file system or between multiple file systems
 .Sh SYNOPSIS
 .In sys/param.h
 .In sys/vnode.h
diff --git a/sys/fs/nfsclient/nfs_clvnops.c b/sys/fs/nfsclient/nfs_clvnops.c
--- a/sys/fs/nfsclient/nfs_clvnops.c
+++ b/sys/fs/nfsclient/nfs_clvnops.c
@@ -3898,8 +3898,11 @@
 	off_t inoff, outoff;
 	bool consecutive, must_commit, tryoutcred;
 
-	/* NFSv4.2 Copy is not permitted for infile == outfile. */
-	if (invp == outvp) {
+	/*
+	 * NFSv4.2 Copy is not permitted for infile == outfile.
+	 * TODO: copy_file_range() between multiple NFS mountpoints
+	 */
+	if (invp == outvp || invp->v_mount != outvp->v_mount) {
 generic_copy:
 		return (vn_generic_copy_file_range(invp, ap->a_inoffp,
 		    outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags,
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -3076,12 +3076,14 @@
 		goto out;
 
 	/*
-	 * If the two vnode are for the same file system, call
+	 * If the two vnodes are for the same file system type, call
 	 * VOP_COPY_FILE_RANGE(), otherwise call vn_generic_copy_file_range()
-	 * which can handle copies across multiple file systems.
+	 * which can handle copies across multiple file system types.
 	 */
 	*lenp = len;
-	if (invp->v_mount == outvp->v_mount)
+	if (invp->v_mount == outvp->v_mount ||
+	    strcmp(invp->v_mount->mnt_vfc->vfc_name,
+	    outvp->v_mount->mnt_vfc->vfc_name) == 0)
 		error = VOP_COPY_FILE_RANGE(invp, inoffp, outvp, outoffp,
 		    lenp, flags, incred, outcred, fsize_td);
 	else