1.3.8、通过RemoteAddr匹配

server:
  port: 8080

spring: 
  application:
    name: gateway
  cloud:
    gateway:
      routes:
        - id: guo-system4
          uri: https://www.baidu.com
          predicates:
            - RemoteAddr=192.168.234.1/0 #其中 192.168.234.1 是 IP 地址，0 是子网掩码)
          filters:
            - StripPrefix=1