Extending the certificate to also cover www.iix.se

sudo certbot certonly --standalone -d iix.se,www.iix.se,monit.iix.se,test.iix.se                                                                                          Sat Nov 04 11:14 W44
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org

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You have an existing certificate that contains a portion of the domains you
requested (ref: /etc/letsencrypt/renewal/iix.se.conf)

It contains these names: iix.se, monit.iix.se, test.iix.se

You requested these names for the new certificate: iix.se, www.iix.se,
monit.iix.se, test.iix.se.

Do you want to expand and replace this existing certificate with the new
certificate?
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(E)xpand/(C)ancel: e
Renewing an existing certificate
Performing the following challenges:
tls-sni-01 challenge for iix.se
tls-sni-01 challenge for www.iix.se
tls-sni-01 challenge for monit.iix.se
tls-sni-01 challenge for test.iix.se
/usr/lib/python2.7/dist-packages/OpenSSL/rand.py:58: UserWarning: implicit cast from 'char *' to a different pointer type: will be forbidden in the future (check that the types are as you expect; use an explicit ffi.cast() if they are correct)
  result_code = _lib.RAND_bytes(result_buffer, num_bytes)
Waiting for verification...
Cleaning up challenges
Generating key (2048 bits): /etc/letsencrypt/keys/0009_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0009_csr-certbot.pem

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at
   /etc/letsencrypt/live/iix.se/fullchain.pem. Your cert will expire
   on 2018-02-02. To obtain a new or tweaked version of this
   certificate in the future, simply run certbot again. To
   non-interactively renew *all* of your certificates, run "certbot
   renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
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