Linked Questions

0
votes
2answers
813 views

IPv6 and /64 block allocation [duplicate]

I'm sure this is a FAQ, but I can't find any clear answer. From what I understand, IPv6 addresses should be allocated in /64 blocks. Many articles are warning against using anything less, which might ...
1
vote
2answers
116 views

Again trouble with IPv6 [duplicate]

Possible Duplicate: How does IPv6 subnetting work and how does it differ from IPv4 subnetting? I have a IPv4-Subnet (/28) and a IPv6-Subnet (/64) - lets say the IPv4 Subnet is "87.240.70.144/28" ...
433
votes
8answers
150k views

How does IPv4 Subnetting Work?

This is a Canonical Question about IPv4 Subnets. Related: How does IPv6 subnetting work and how does it differ from IPv4 subnetting? How does Subnetting Work, and How do you do it by ...
103
votes
17answers
44k views

Switching to IPv6 implies dropping NAT. Is that a good thing?

This is a Canonical Question about IPv6 and NAT Related: How does IPv6 subnetting work and how does it differ from IPv4 subnetting? How can I 'dip my toes' into dynamic IPv6 ...
3
votes
3answers
1k views

/64 routed to my assigned IPv6 address?

So I have a vps provider for a linux server, it states this in my network dashboard on their site: 2607:f840:0044:0022:0000:0000:0000:0000/64 is routed to this server (2607:f840:0:3f:0:0:0:eaa) ...
1
vote
1answer
9k views

Sending netmask and gateway/route with dhcp for ipv6

I have setup a DHCP server to assign ipv6 to my clients. However, both the "routers" and "subnet" OPTIONS are ignored. I have read that ipv6 does not get theese from the DHCP, rather from the router ...
0
votes
2answers
3k views

What's the difference between a subnet and a netblock?

I'm new to networking and am trying to get my terminology straight. I've Google this question but haven't found anything that clearly explains it.
3
votes
1answer
1k views

IPv6 subnetting a dynamic /56 prefix

I read How does IPv6 subnetting work and how does it differ from IPv4 subnetting? but my question was not answered there. I'm upgrading our IPv4 network to IPv6. Currently, our NAT gateway splits our ...
1
vote
1answer
846 views

How to start with IPv6 subnetting on linux gateway

We are currently having perfectly working IPv4 network with a typical layout - internal network with all servers splitted to VLANs in 10.0.0.0/8 (each vlan is /24) and external network with public ip ...
3
votes
1answer
440 views

AWS CLI Elastic IP, IPv6

I have two AWS instances working in high availability. (I'm using keepalived) I have an Elastic IP associated, everything was a fine. I used this script so to change the instance IP in case o ...
0
votes
3answers
309 views

IPv6: Creating ranges, range values

So I've just been assigned a /64 IP address range. I'm using SolusVM to manage virtual machines. With the /64, I am given the first 4 (octets? I think they're called) so my format is currently XXXX:...
4
votes
1answer
95 views

What IPv6 block should be whitelisted when a user asks to whitelist their IP?

Currently, on my IPv4-only service, users can whitelist their IP address which allows them to bypass email 2-factor authentication when they log in. When they do this we only whitelist that single IP ...
-3
votes
1answer
192 views

Can I create IPv6 /48 addresses from IPv6 /64 block on my server? Or I need to request /48 block?

On my dedicated server and I have request from support IPv6 /48. For some reason they deliver to me IPv6 /64 like this IPv6 /64 2001.9d2.190.846v::2 Can I build /48 addresses from the IPv6 /64? Or I ...
0
votes
1answer
47 views

Adding a dns zone in Active Directory - are there possible side effects?

Hi I am working with a very basic Active Directory setup, which unfortunately is name mydomain.local which means I can't get an SSL cert. I bought one for an external domain mydomain.click. I ...