On 06-Nov-21 01:09, Stewart Bryant wrote:
On 5 Nov 2021, at 11:10, Vasilenko Eduard <vasilenko.eduard@xxxxxxxxxx <mailto:vasilenko.eduard@xxxxxxxxxx>> wrote:
What is important: Enterprises have no clear sign of IPv6 adoption.
ND protocol has a heavy influence on this.
Of course, ND is not the only reason. But maybe the biggest one.
Indeed, and I have had a consistent complaint from a British security conscious large private sector technology savvy company, that IPv6 is so much harder to secure than IPv4 they have no interest in moving. I think that part of this is the conflict between the privacy that IPv6 offers and their need to know that *every* packet on their network is entitled to be there doing what it is doing.
You can administratively disable "privacy" (temporary) addresses, but most sites find it safer to perform access control based on MAC addresses. Temporary addresses are intended to confuse the outside world, not the local network operator. They are *intended* to make lawful intercept harder. That's a feature, not a bug. I agree that they also make debugging harder, which may be another reason to disable them.
Complaining about ND seems odd if sites tolerate ARP. Anybody else remember ARP storms? ND was designed to avoid that risk.
All these are FUD arguments used in support of operational inertia.
Brian
