Hi all,
      I am using eap-aka to do authentication, I am wondering when to use 
leftid and when to use eap_identity. I saw previous mailing list and knew that 
if we did not set eap_identity, then leftid will be used as both IKE id and eap 
id.
 
I did some experiments, but the results were not what I expected.
I set ipsec.secrets as follows :
client side:   <IMSI> : EAP "<secret>" 
server side:  : RSA sunKey.pem
                   <IMSI> : EAP "<secret>" 
 
(1) with no eap_identity, and leftid is filled with IMSI from USIM, eap-aka   
authentication worked well.
 
(2) with eap_identity filled with IMSI, and leftid filled with cert id 
(although certificate is not used), eap-aka authentication failed.  
 
(3) with no leftid, and eap_identity filled with IMSI, eap-aka authentication 
still failed.
 
 
Here is my configuration: ipsec.conf
 
<client side>
config setup
  plutostart=no
 
conn %default
 rekeymargin=3m
 keyingtries=1
 keyexchange=ikev2
 dpdaction=clear
  
conn rw-eapaka
 left=192.168.0.102
 leftid=001080123456412
 #eap_identity=001080123456412
 leftauth=eap
 leftsourceip=%config
 right=192.168.0.103
 rightid="C=tw, ST=tw, O=tw, OU=tw, CN=sun"
 rightsubnet=0.0.0.0/0
 rightauth=pubkey
 auto=add
 
 
<server side>
config setup
  plutostart=no
  strictcrlpolicy=no
 
conn %default
 rekeymargin=3m
 keyingtries=1
 keyexchange=ikev2
 dpdaction=clear
  
conn rw-eapaka
 left=192.168.0.103
 leftsubnet=0.0.0.0/0
 leftid="C=tw, ST=tw, O=tw, OU=tw, CN=sun"
 leftcert=sunCert.pem
 leftauth=pubkey
 right=%any
 rightsendcert=never
 rightauth=eap-aka
 rightsourceip=192.168.2.3
 auto=add

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