IPv6 setup with public subnet
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@demonmaestro said in IPv6 setup with public subnet:
"This is a /112 assignment on my port." So I am guessing they are routed to me.
You can't assume that.
Also, you'd use SLAAC on the LAN side, where you'd have a /64 prefix. While you could use DHCPv6, SLAAC is easier to set up.
What ISP are you with? Maybe someone else here has experience with them.
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I gave the ISP a shout and they are giving me a /64.
Had to talk to some different people in the chain. I will look into the SLAAC.Thank you for the help.
*edit: Had a space between m e.
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How are they providing that /64? Routed or just a block of address at the modem? A /64 you can get either way, but anything bigger requires routing. With my ISP, when my modem is in bridge mode, I get a /56 routed to me. However, in gateway mode, I just get a /64, which is not routed.
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Just a block of IPs. I must configure the "router" to do what I want with them.
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IPv6 does not work like that. They should route at least a /56 to your WAN interface. You would then put a /64 on each inside interface. You would have 256 of those.
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@Derelict unfortunately all they gave me was a /112. initially.
Then today when I called them they said that they will give me a /64. But IF I want anything more than that that I would have to go directly to ARIN. -
@demonmaestro said in IPv6 setup with public subnet:
@Derelict unfortunately all they gave me was a /112. initially.
Then today when I called them they said that they will give me a /64. But IF I want anything more than that that I would have to go directly to ARIN.Some ISPs are really pathetic. Many ISPs hand out /56s or even /48s, though I have heard of /60. These prefixes are routed, so they can be split into /64s by the customer's router. As I mentioned, a single /64 can be routed or not. You'll have to ask the ISP to find out. Also, what ISP are you with? Maybe someone else here has worked with them.
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this is insane, a /48 could be assigned to every human in the world for the next 480 years before they run out. your isp will go out of business before that ...
ask for at least a /56 if they don't want to give it to you, tell everywhere that this isp sucks and change it asap if you can -
@kiokoman said in IPv6 setup with public subnet:
this is insane, a /48 could be assigned to every human in the world for the next 480 years
There are enough /48s to give every single person on earth over 4000 of them. This is with only 1/8 of the IPv6 address space assigned to GUAs. Over 3/4 of the address space isn't even allocated to anything.
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@JKnott said in IPv6 setup with public subnet:
There are enough /48s to give every single person on earth over 4000 of them. This is with only 1/8 of the IPv6 address space assigned to GUAs. Over 3/4 of the address space isn't even allocated to anything.
<devils advocate>
This is true, but it is not reflected in the price ARIN charges for v6 space. For a small provider, the annual fee doubles when you go from a /40 (256 customer allocations) to a /36 (4096 customer sites), and doubles again when you go to a /32 (65,536 sites). Probably smaller shops are trying to cut costs on v6 deployment, as it offers little benefit to them if they have sufficient v4 space.
</devils advocate>
