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dual-stack error in IPoE

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  • 1.  dual-stack error in IPoE

    Posted 07-02-2019 23:14

    Hello everyone,

     

    I have IPoE which is in production. I am frequently getting the error mentioned below and I suspect because of this error, subscribers are not being able to get connected. The subscriber who connects doesnt have such error. This error is taken from jdhcpd log.

     

    I would be thankful if anyone explains why is this error getting hit and what are the fix.

     

    Jul 3 10:59:48.408019 [MSTR][DEBUG] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_profile_get: No snapshot handle to recover SDB profile name

    Jul 3 10:59:48.408031 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_profile_get: Profile_get using regular profile wlink_hs_1

    Jul 3 10:59:48.408048 [MSTR][DEBUG][default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_dual_stack_get_client_from_key: checking for dual-stack peer flags3(8000), ifl ()

    Jul 3 10:59:48.408073 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_dual_stack_accept_client: dual stack failure - client already on interface.

    Jul 3 10:59:48.408099 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_local_server_state_init: Dropping client due to dual stack check failure.

    Jul 3 10:59:48.408124 [MSTR][WARN] [default:default][SVR][INET][demux0.3221233394][SID=0] safd_num_clients_bound_dec: NOK:decrementing safd(0x2954e80) bound clients counter for client (0x37d8000)



  • 2.  RE: dual-stack error in IPoE

     
    Posted 07-02-2019 23:23
    It is failing at

    jdhcpd_dual_stack_accept_client: dual stack failure - client already on interface

    please check the configuration

    thank you
    Prabin


  • 3.  RE: dual-stack error in IPoE

    Posted 07-02-2019 23:39

    Yes, i am aware of it. But I am in confusion why few subscribers are getting such errors and other few have no issue connecting.

     

    check dual-stack config too and it is as per juniper suggested. Had there any issue, no other subscribers would connect.



  • 4.  RE: dual-stack error in IPoE

     
    Posted 07-03-2019 01:18

    Hi Kijush,

     

    Did you tried delete-binding-on-renegotiation knob in your setup? Will it make any difference?

     

    Regards,
    Rahul



  • 5.  RE: dual-stack error in IPoE

    Posted 07-03-2019 01:24
    set system services dhcp-local-server dhcpv6 group IPv6 overrides delete-binding-on-renegotiation set system services dhcp-local-server group IPv4 overrides delete-binding-on-renegotiation it was configured yesterday but it didn't help.


  • 6.  RE: dual-stack error in IPoE

     
    Posted 07-03-2019 03:10


  • 7.  RE: dual-stack error in IPoE

    Posted 07-03-2019 04:52

    Yes. Rahul. This knob have been already enabled.

     

    set system services dhcp-local-server overrides client-discover-match incoming-interface



  • 8.  RE: dual-stack error in IPoE
    Best Answer

    Posted 07-06-2019 22:03
    Issue was resolved after activating classification-key. It was unknowingly deactivated during previous troubleshoots.