diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 025116c66fef..c866e325577f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4881,6 +4881,20 @@ nfs4_init_uniform_client_string(const struct nfs_client *clp,
 				nodename);
 }
 
+/*
+ * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
+ * services.  Advertise one based on the address family of the
+ * clientaddr.
+ */
+static unsigned int
+nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len)
+{
+	if (strchr(clp->cl_ipaddr, ':') != NULL)
+		return scnprintf(buf, len, "tcp6");
+	else
+		return scnprintf(buf, len, "tcp");
+}
+
 /**
  * nfs4_proc_setclientid - Negotiate client ID
  * @clp: state data structure
@@ -4922,12 +4936,10 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
 						setclientid.sc_name,
 						sizeof(setclientid.sc_name));
 	/* cb_client4 */
-	rcu_read_lock();
-	setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
-				sizeof(setclientid.sc_netid), "%s",
-				rpc_peeraddr2str(clp->cl_rpcclient,
-							RPC_DISPLAY_NETID));
-	rcu_read_unlock();
+	setclientid.sc_netid_len =
+				nfs4_init_callback_netid(clp,
+						setclientid.sc_netid,
+						sizeof(setclientid.sc_netid));
 	setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
 				sizeof(setclientid.sc_uaddr), "%s.%u.%u",
 				clp->cl_ipaddr, port >> 8, port & 255);