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    SubjectBeginer's Q> arp_run_bh?
    Hi, All.
    I'm confusing about the relation between the timer and bh in case of

    At the end of arp_update, there are
    "arp_enqueue(&arp_backlog, entry);
    arp_bh_mask |= ARP_BH_BACKLOG; ."
    Do you know the purpuse of these two lines?

    I suppose "arp_run_bh" do something with the enqued backlog,
    but it follows different way from mark_bh() does.
    Also timer does something( entry expiry? ) related with this, but how is
    this set to be called?

    Would you make it clear for me?

    Thanks in advance,

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