Setting Issuer Alternative Name

[Robert Moskowitz <rgm@xxxxxxxxxxxxxxx>]

In rfc5280:

   IssuerAltName ::= GeneralNames

   GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName

   GeneralName ::= CHOICE {
        otherName                       [0]     OtherName,
        rfc822Name                      [1]     IA5String,
        dNSName                         [2]     IA5String,
        x400Address                     [3]     ORAddress,
        directoryName                   [4]     Name,
        ediPartyName                    [5]     EDIPartyName,
        uniformResourceIdentifier       [6]     IA5String,
        iPAddress                       [7]     OCTET STRING,
        registeredID                    [8]     OBJECT IDENTIFIER }

So since I want a DET as IssuerAltName (e.g. 
20010030000000052aeb9adc1ce8b1ecO), it seems that iPAddress is the only 
thing that works.  So in the config file, I tried:

#authorityKeyIdentifier = keyid:always,issuer
authorityKeyIdentifier = "iPAddress:20010030000000052aeb9adc1ce8b1ec"

and using "openssl req" get the error:

Error checking x509 extension section v3_ca
403C7BDE967F0000:error:11000078:X509 V3 
routines:v2i_AUTHORITY_KEYID:unknown 
option:crypto/x509/v3_akid.c:131:name=iPAddress
403C7BDE967F0000:error:11000080:X509 V3 
routines:X509V3_EXT_nconf_int:error in 
extension:crypto/x509/v3_conf.c:48:section=v3_ca, 
name=authorityKeyIdentifier, 
value=iPAddress:20010030000000052aeb9adc1ce8b1ec

I have used iPAddress: in SAN, and thought that this would work, 
obviously I am missing something....

Thanks for any pointers.