| krb5_auth_con_getaddrs() | H5l: If either of the pointers to local_addr
and remote_addr is not NULL, it is freed
first and then reallocated before being
populated with the content of corresponding
address from authentication context. | 
| krb5_auth_con_setaddrs() | H5l: If either address is NULL, the previous
address remains in place | 
| krb5_auth_con_setports() | H5l: Not implemented as of version 1.3.3 | 
| krb5_auth_con_setrecvsubkey() | H5l: If either port is NULL, the previous
port remains in place | 
| krb5_auth_con_setsendsubkey() | H5l: Not implemented as of version 1.3.3 | 
| krb5_cc_set_config() | MIT: Before version 1.10 it was assumed that
the last argument data is ALWAYS non-zero. | 
| krb5_cccol_last_change_time() | H5l takes 3 arguments: krb5_context context,
const char *type, krb5_timestamp *change_time
MIT takes two arguments: krb5_context context,
krb5_timestamp *change_time | 
| krb5_set_default_realm() | H5l: Caches the computed default realm context
field.  If the second argument is NULL,
it tries to retrieve it from libdefaults or DNS.
MIT: Computes the default realm each time
if it wasn’t explicitly set in the context |