111–120 of 201 posts
If I was CEO of an ISP, I would have ordered a plan, but not put it into action just yet.
Anybody know why 240.0.0.0/4 is not used? It currently blocked by many routers/firewalls but it was possible to start "unreserving" process long time ago and use this net by now.
IIRC, a lot of networking equipment chokes on it.
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We do have more and more people in the world. Things like NATing can help get around it to some extent, but at the end of the day there aren't enough addresses to give every human alive today even one IP address. That doesn't strike me as a problem that can be solved by buybacks.
Trouble is that NAT solved a huge chunk of the problem. The current setup is not quite painful enough for people to want to fix it. The good is the enemy of the great, as it were.
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They don't have to give it back, of course. If anything, the first organization to have netblocks yanked out from under them should be the US DoD. As I mentioned a few days ago [0]: > There are also large portions of the 13 /8s (218 million IPs!) assigned to the US Department of Defense [5] that you wouldn't need to scan since there are no routes to them at all: the 11.0.0.0/8, 22.0.0.0/8, 26.0.0.0/8, 28.0.0.0/8, 29.…
Man I've worked with my fair share of quasi-governmental agencies who have a /8 or /16 to themselves and use it for their internal address space. I wonder how many addresses we'd have if we could take back unused address space.
Did they need an additional 16M IP addresses?
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Support for IPv6 is weird. Comcast's IPv6 implementation is rock solid and faster than IPv4 most of the time. I've been running publicly accessible IPv6 HTTP hosts over it for several years now. The last two Motorola Modems I've had came with IPv6 support and were provisioned by Comcast out of the box. Access Points from D-Link will autoconfigure via SLAAC but DNS has to be hardcoded. It's 2018 and yet Ubiquiti's Uni…
Does your Comcast IPv6 address ever change on you? If yes, do you have any tricks to keep your HTTP servers accessible?
I use http://freedns.afraid.org/ to manage my DNS. They support IPv4 and IPv6 with domain linking so you can update all your DNS records with 2 calls (one for IPv4 and one for IPv6). This can be done with wget via a cronjob on your web server or in most routers these days. If you use their premium tier you can use stealth records and wildcard DNS.
Just remember to set your TTLs on your A records to something low like 60 seconds. And don't host anything mission critical.
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Does your Comcast IPv6 address ever change on you? If yes, do you have any tricks to keep your HTTP servers accessible?
It does but I can't say how frequently. My IPv4 address has only changed 7 times since 2012. My IPv6 record has changed once this year when I shut down my modem for an extended period of time. I use http://freedns.afraid.org/ to manage my DNS. They support IPv4 and IPv6 with domain linking so you can update all your DNS records with 2 calls (one for IPv4 and one for IPv6). This can be done with wget via a cronjob on…
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Man I've worked with my fair share of quasi-governmental agencies who have a /8 or /16 to themselves and use it for their internal address space. I wonder how many addresses we'd have if we could take back unused address space.
Why do they do that? They already have an /8 to themselves -- 10.0.0.0/8. Did they need an additional 16M IP addresses?
Thankfully NAT doesn't exist in IPv6, because 2^128 addresses should be enough for everybody.
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IMO retarded greedy ISPs issuing /64 prefixes to customers. Now you aren’t supposed to NAT but you can’t have multiple subnets either.
Not a network guy, but I thought IPv6 made subnetting mostly unnecessary? Certainly on an individual consumer level?
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Not a network guy, but I thought IPv6 made subnetting mostly unnecessary? Certainly on an individual consumer level?
Real life example: how do you isolate a wireless guest SSID from your main work network without different subnets? Those are still needed but said ISP will just hand you one network.
I use this on my home LAN, guests can communicate with the Chromecast and media server but can't reach the printer or others.
"It's important to keep in mind that while 185/8 is finished, we still have around nine million recovered IPv4 addresses in our available pool. Under current policy and growth rates, we expect these to last a further two years." They've really cracked down on IP allocation since the days of giving companies entire /8s, or even since 2012 "185/8 was allocated in just five and a half years...in comparison, the precedin…
> They've really cracked down on IP allocation since the days of giving companies entire /8s [...] You did not have to be a company, your estimates of how many of the IPs you request you'll plan to use right away, after one and after two years just had to be within some boundaries (ripe form #160, if memory serves me correctly).