RFC 6177: This document obsoletes RFC 3177, updating its recommendations in the following ways: 1) It is no longer recommended that /128s be given out. While there may be some cases where assigning only a single address may be justified, a site, by definition, implies multiple subnets and multiple devices. Generally, when you look at an obsolete document such as https://tools.ietf.org/html/rfc3177 there is a link to the current version ("Obsoleted by: 6177"): https://tools.ietf.org/html/rfc6177 Do not use websites showing RFCs that do not show this information; you'll be stuck with outdated specifications. Grüße, Carsten Ricardo Ferreira wrote:
Is there anyone here working in an ISP where IPv6 is deployed? We are starting to plan the roll-out IPv6 to mobile subscribers (phones) I am interesting in knowing the mask you use for the assignment; whether it is /64 or /128.
In RFC 3177, it says: 3. Address Delegation Recommendations
The IESG and the IAB recommend the allocations for the boundary between the public and the private topology to follow those general rules:
- /48 in the general case, except for very large subscribers. - /64 when it is known that one and only one subnet is needed by design. - /128 when it is absolutely known that one and only one device is connecting.
Basically a sole device will be connecting to the internet so I am wondering if this rule is follwed.
Cheers