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Unable to clear ARP cache on XG210 w/ 17.0.6

Hi,

Our Sophos box is showing <incomplete> entries in the ARP table and is dropping connections frequently. We're running 17.0.6 (this forum says that 17.0.8 is the latest version but my console shows no new updates).

During our investigation into issues in our network, we came across ARP table issues on the network and it looks like there might be some issues with the Sophos box.

Has anyone experienced the same issue? I've tried:

  • Deleting the entries manually from the GUI
  • Flushing the entries from the GUI
  • Flushing the entries from the command line ( ip -s -s neigh flush all )

When I flush the GUI, the entries disappear but return after refreshing the page. When I flush via the command line, I get success (even after a few rounds) but "arp -a" shows the whole table as it was before the command.

If anyone has any insight on how to flush the box, it would be greatly appreciated.



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