Net Tile: ARP Table Size Error Ignored

[0x0ece]

https://github.com/firedancer-io/audits/blob/main/Atredis%20Partners%20-%20Firedancer%20v0.1%20Audit.pdf

Finding Overview

The ARP table stored by the Net tile cannot grow when the system's ARP table grows. If an attacker can fill the system ARP table (with valid entries or with pending entries), then the Net tile may lose access to physical addresses needed for normal communication. This may lead to degradation of communications and dropped packets.

Resolution

TODO

[ripatel-fd]

If an attacker can fill the system ARP table (with valid entries or with pending entries)

IMO, the threat model should not include Ethernet ARP flood. Defending against ARP floods is the network administrator's job and cannot be done in pure software in Firedancer. The size of the ARP table should be specified by the user (or a config default) ahead of time and it should stay like that. Therefore, I vote to close this as "won't do".