Subject Alternative Name not present in certificate
问题 I have generated a CSR that includes the field subject alt names: openssl req -out mycsr.pem -new -key mykey.pem -days 365 When I inspect this it looks as expected with a new field present: X509v3 Subject Alternative Name: DNS: my.alt.dns However when I use this to sign a certificate that field is omitted for some reason. I generate it with the following command: openssl ca -out mycert.pem -infiles mycsr.pem Can it be that my CA cert have to include the same Alt name for it to be included?