I don't recall the specifics of macsec but it's possible to build a link encryptor that adds essentially zero latency. (like... no more latency than the gate de

I don't recall the specifics of macsec but it's possible to build a link encryptor that adds essentially zero latency. (like... no more latency than the gate delay of a single xor gate... plus some once-an-hour packet-length delay of some rekeying traffic).