Caitlin Bestler wrote:
Sniffing is a workaround. Subscription is the correct
solution here for long term stability.
Subscription is also the only solution that will correctly
respond when the system administrator has manually loaded
an ARP entry.
This also applies to Routing and ICMP.
To clarify, ib_addr does not actually "sniff" ARPs. It simply uses them to
schedule its workqueue thread to check for updates. Manually loaded ARP entries
would the same as any previously loaded entries. If there is a subscription
based mechanism that can be used as well or instead, it should be
straightforward to update ib_addr. I am just not familiar enough with the Linux
network stack to know if such a mechanism exists.
- Sean
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