vty: Write 'neighbor resolution' config to file

Fixes: c0a250d17d
Related: SYS#4909
Change-Id: I44eef3826939e05ba88e0c5a67e1fef535582ba7

src/pcu_vty.c

@@ -250,6 +250,11 @@ static int config_write_pcu(struct vty *vty)
 	else
 		vty_out(vty, " gb-dialect classic%s", VTY_NEWLINE);
 
+	if (the_pcu->vty.neigh_ctrl_addr) {
+		vty_out(vty, " neighbor resolution %s %u%s",
+			the_pcu->vty.neigh_ctrl_addr, the_pcu->vty.neigh_ctrl_port, VTY_NEWLINE);
+	}
+
 	osmo_tdef_vty_write(vty, the_pcu->T_defs, " timer ");
 
 	return CMD_SUCCESS;