dubbo2.6.6+zookeeper0.11+springboot2.0.0报错

com.alibaba.dubbo.rpc.RpcException:
Fail to start server
(url: dubbo://169.254.169.71:20880/com.wz.springboot.dubbo.zookeeper.maven.demo.api.service.UserService?anyhost=true&application=provider&bean.name=com.wz.springboot.dubbo.zookeeper.maven.demo.api.service.UserService&bind.ip=169.254.169.71&bind.port=20880&channel.readonly.sent=true&codec=dubbo&dubbo=2.0.2&generic=false&heartbeat=60000&interface=com.wz.springboot.dubbo.zookeeper.maven.demo.api.service.UserService&methods=findUser&pid=4512&side=provider&timestamp=1560308343938)
Failed to bind NettyServer on /169.254.169.71:20880,
cause: io/netty/bootstrap/ServerBootstrap