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+++ This bug was initially created as a clone of Bug #1956388 +++

libkrb5 now supports KCM_OP_GET_CRED_LIST when talking with sssd-kcm to improve performance. Please include it in 8.5.

Commits:
* https://github.com/krb5/krb5/commit/81bdb47d8ded390263d8ee48f71d5c312b4f1736
* https://github.com/krb5/krb5/commit/06afae820a44c1dc96ad88a0b16c3e50bc938b2a

> * https://github.com/krb5/krb5/commit/06afae820a44c1dc96ad88a0b16c3e50bc938b2a

I don't plan to include this.  It papers around an SSSD bug - returning the wrong code - and I would prefer SSSD fix it.  (You indicated intent to do so in https://github.com/krb5/krb5/pull/1177#issuecomment-810900921 .)

> * https://github.com/krb5/krb5/commit/81bdb47d8ded390263d8ee48f71d5c312b4f1736

This one should be fine to include.  

I would like to wait a few days and grab the RETRIEVE logic as well.  However, that will expose another issue with SSSD return codes ( https://github.com/SSSD/sssd/pull/5629 ) so if that's not also backported, I will hold off on doing so.

Please let me know if there are any problems with this plan.