https - hopefully not too stupid a question
alec.muffett at gmail.com
Mon Jun 18 06:49:31 BST 2012
On 18 Jun 2012, at 06:36, Florian Weimer wrote:
> Not in datacenters, where you'd typically have machines which run data
...I am familiar with the whir of the fans, the whine of the UPS and the dangers of halon and an unprotected BRS, they haunt my dreams; Cisco and Juniper switches lollop through my nightmares as I try to recall the labyrinthine double negative syntax of "unset nononopoweroffnoreally" to shut them down...
> With IPv4, most hosters tell you to configure a /24 netmask
> on your interface. But this doesn't mean that you'll be able to use
> more than the one IPv4 address the network has handed to you.
Mmph. Actually I have a /29 at home which nominally would provide me with 5 routable addresses + 1 router address + broadcast and network address, and therefore I've had to set my internet-side net mask to 255.255.255.248; I rather think that if I set it to reflect a /24 this might cause some upset upstream.
Within my home network I have three /24s, yes, obviously, because you can - but that's because I'm insulated by NAT.
If/when my ISP give me a IPv6 /64 to fart around with, I shall take great delight in hosting a web server on my phone.
> With IPv6, there are still technical reasons for limits, although
> addresses aren't scarce: each address requires precious TCAM space,
> and neighbor discovery does not work at scale.
Fine. So my IPv6 neighbours are in my home. Just route to it. :-)
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