> it's a source of endless difficulty and frustration due to the clash between "we can't replace or upgrade these systems at the moment" and "there's some document that's just popped up that says we need to take them out of production and replace them". But in response to Eliot you said > The fact that many of these devices are extremely critical is precisely why they're never replaced or upgraded, because they can't be taken out of production. -- last-call mailing list last-call@xxxxxxxx https://www.ietf.org/mailman/listinfo/last-call