When ipType is IPv6 but there's no IPv6 found, find IPv4(Fixes gh-2802) #2810
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Describe what this PR does / why we need it
When
spring.cloud.nacos.discovery.ip-typeis IPv6 but no IPv6 can be found out, SCA will automatically find IPv4. Thus a available service address is more likely to be provided.Does this pull request fix one issue?
Fixes #2802
Describe how you did it
Describe how to verify it
Use a machine which doesn't support IPv6 to register. Or in application, set spring.cloud.inetutils.preferred-networks to exclude any IPv6.
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