Bind ipv4 address failure

[pei-han]

i read spring cloud alibaba document seriously,it says using spring.cloud.nacos.discovery.network-interface and ip-type property can bind ipv4 address,but by experiment that is false.

can you guys help me？Any suggestions i appreciate.

Which Component
spring cloud alibaba discovery version 2021.0.5.0
nacos version 2.3.0-beta

Describe the bug
Binding ipv4 address does not work in virtual host with mutiple ethernet cards.
在多网卡的虚拟主机上，绑定ipv4地址失败，绑定了ipv6地址。

Simplest demo
The URL of the simplest demo to reproduce the problem.

To Reproduce
Steps to reproduce the behavior:
bootstrap.yml configuration file screenshot below.

this service detail in nacos looks like below.

ip address list below

Expected behavior
i expect the ipv4 address 172.18.18.92 in ip column of table.
预期在服务表格的ip一列应该是ipv4地址。
Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
jdk1.8.45,os version centos 6.5
spring-boot version 2.7.13
spring-cloud version 2021.0.8

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[github-actions]

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