Running with RC4 only:

(gdb) set args host
(gdb) run
Starting program: /afs/anl.gov/appl/krb5-dev/sun4x_510/krb5m/sbin/gss-server host
[Thread debugging using libthread_db enabled]
[New Thread 1 (LWP 1)]
krb5_pac_parse:398 cbuffers=5 version=0
krb5_pac_parse:409 i=0 ulType=1 cbBufferSize=1024 Offset=0
krb5_pac_parse:409 i=1 ulType=10 cbBufferSize=22 Offset=0
krb5_pac_parse:409 i=2 ulType=12 cbBufferSize=64 Offset=0
krb5_pac_parse:409 i=3 ulType=6 cbBufferSize=20 Offset=0
krb5_pac_parse:409 i=4 ulType=7 cbBufferSize=20 Offset=0
k5_pac_zero_signature:557  type=6 -138 16
k5_pac_zero_signature:557  type=7 -138 16
mspac_verify:1105 First verify code=0
context flag: GSS_C_MUTUAL_FLAG
context flag: GSS_C_REPLAY_FLAG
context flag: GSS_C_CONF_FLAG 
context flag: GSS_C_INTEG_FLAG 
Accepted connection: "b17783@ANL.GOV"
Received message: "XXXX"
NOOP token

rnning with AES256  as  set in  msDS-Supported_encryptionTypes = 16 
but checksup is still sent as -138 the RC4 version. 


krb5_pac_parse:398 cbuffers=5 version=0
krb5_pac_parse:409 i=0 ulType=1 cbBufferSize=1024 Offset=0
krb5_pac_parse:409 i=1 ulType=10 cbBufferSize=22 Offset=0
krb5_pac_parse:409 i=2 ulType=12 cbBufferSize=64 Offset=0
krb5_pac_parse:409 i=3 ulType=6 cbBufferSize=20 Offset=0
krb5_pac_parse:409 i=4 ulType=7 cbBufferSize=20 Offset=0
k5_pac_zero_signature:557  type=6 -138 16
k5_pac_zero_signature:557  type=7 -138 16
mspac_verify:1105 First verify code=-1765328196
k5_pac_zero_signature:557  type=6 -138 16
k5_pac_zero_signature:557  type=7 -138 16
mspac_verify:1128 retry verify code2=-1765328353 enctype=23 pac->verified=0

Note: found the RC4 key in key file, but verify fails KRB5KRB_AP_ERR_BAD_INTEGRITY
as the provided and computed checksum don't match. 

k5_pac_zero_signature:557  type=6 -138 16
k5_pac_zero_signature:557  type=7 -138 16
mspac_verify:1128 retry verify code2=-1765328196 enctype=17 pac->verified=0
k5_pac_zero_signature:557  type=6 -138 16
k5_pac_zero_signature:557  type=7 -138 16
mspac_verify:1128 retry verify code2=-1765328196 enctype=18 pac->verified=0
GSS-API error accepting context: Unspecified GSS failure.  Minor code may provide more information
GSS-API error accepting context: Bad encryption type