Problems when using hostapd on wired:IEEE 802.1X data frame from not associated STA

[2008 vpn]

I try to setup a eap testbed on wired.  I run hostapd on ubuntu(vmware) and
wpa_supplicant on another ubuntu(vmware) host.
But when hostapd receives identity response, following mesasge is given out:

IEEE 802.1X: 46 bytes from 00:0c:29:13:68:99
IEEE 802.1X data frame from not associated STA


What does that mean?  For wired, associated is needed? If yes, how to
associate it?


configuration is as fillowing :
wired.conf
====================================================================================================

interface=eth1
driver=wired
logger_stdout=-1
logger_stdout_level=1
debug=2
dump_file=/tmp/hostapd.dump

ieee8021x=1
eap_reauth_period=3600

use_pae_group_addr=1


##### RADIUS configuration
####################################################
# for IEEE 802.1X with external Authentication Server, IEEE 802.11
# authentication with external ACL for MAC addresses, and accounting

# The own IP address of the access point (used as NAS-IP-Address)
own_ip_addr=127.0.0.1

# Optional NAS-Identifier string for RADIUS messages. When used, this should
be
# a unique to the NAS within the scope of the RADIUS server. For example, a
# fully qualified domain name can be used here.
# nas_identifier=ap.example.com

# RADIUS authentication server
auth_server_addr=127.0.0.1
auth_server_port=1812
auth_server_shared_secret=radius

# RADIUS accounting server
#acct_server_addr=127.0.0.1
#acct_server_port=1813
#acct_server_shared_secret=radius



run command for hostapd: sudo ./hostapd -dddd ./wired.conf


=================================================================
configuration for wpa_supplicant:

test.conf:
==============================================
ctrl_interface=/var/run/wpa_supplicant

ctrl_interface_group=root

ap_scan=0

network={

key_mgmt=IEEE8021X

eap=MD5

identity="user"

password="password"
eapol_flags=0

}


run command for wpa_supplicant: sudo ./wpa_supplicant  -dd -i eth1 -c
./test.conf -D wired










If someone has done this, giving me the typical configuration is very
appreciated.
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