winbind エラー kinit succeeded but ads_sasl_spnego_krb5_bind failed: Cannot find KDC for requested realm が発生する

Issue

• "winbindd[28673]: kinit succeeded but ads_sasl_spnego_krb5_bind failed: Cannot find KDC for requested realm." エラーが発生します。
• 以下の winbind エラーが logs ファイルに記録されます。

Apr 30 15:37:55 hostname winbindd[28673]:[2013/04/30 15:37:55.577178,  0] libads/sasl.c:908(ads_sasl_spnego_bind)
Apr 30 15:37:55 hostname winbindd[28673]:   kinit succeeded but ads_sasl_spnego_krb5_bind failed:Cannot find KDC for requested realm


[2013/04/30 15:37:55.556239,  1] libsmb/clikrb5.c:710(ads_krb5_mk_req)
  ads_krb5_mk_req: smb_krb5_get_credentials failed for ldap/hostname.ad.example.com@AD.EXAMPLE.COM (Cannot find KDC for requested realm)
[2013/04/30 15:37:55.577101,  1] libsmb/clikrb5.c:710(ads_krb5_mk_req)
  ads_krb5_mk_req: smb_krb5_get_credentials failed for ldap/hostname.ad.example.com@AD.EXAMPLE.COM (Cannot find KDC for requested realm)
[2013/04/30 15:37:55.577178,  0] libads/sasl.c:908(ads_sasl_spnego_bind)
  kinit succeeded but ads_sasl_spnego_krb5_bind failed:Cannot find KDC for requested realm
[2013/04/30 15:37:55.577397,  1] winbindd/winbindd_ads.c:134(ads_cached_connection)
  ads_connect for domain ADROOT failed:Cannot find KDC for requested realm
[2013/04/30 15:38:53.992052,  3] winbindd/winbindd_misc.c:160(winbindd_dual_list_trusted_domains)
  [28670]: list trusted domains
[2013/04/30 15:38:53.992128,  3] winbindd/winbindd_misc.c:167(winbindd_dual_list_trusted_domains)
  winbindd_dual_list_trusted_domains: trusted_domains returned NT_STATUS_UNSUCCESSFUL