What does "kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped" mean?

Solution In Progress - Updated -

Issue

  • What does kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped mean?
  • We have got the following errors appearing in /var/log/messages:
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 206
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 207
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 208
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 209
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 210
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 211
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 212
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 213
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 214
kernel: nf_queue: full at 1024 entries, dropping packets(s). Dropped: 215

Environment

  • Red Hat Enterprise Linux 6
  • iptables firewall
  • NFQUEUE (nf_queue) netfilter queue in use to pass inspection of packets to userspace

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