How to add X509v3 Subject Alternative Name into the cert with openssl?

[alan alan]

Hi,

 

How to add  X509v3 Subject Alternative Name into the cert with openssl?

Such as:

X509v3 extensions:
            X509v3 Subject Alternative Name: critical
            IP Address:192.168.0.188

 

How to use openssl to realize this?

Thanks.

 

Regards.

alan.

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