[dns-operations] Link-local IP addresses for a resolver?
marka at isc.org
Wed Sep 25 02:31:58 UTC 2019
> On 25 Sep 2019, at 11:52 am, John Levine <johnl at taugh.com> wrote:
> In article <9CA43B29-1345-4FD4-9766-36C624589DA0 at isc.org> you write:
>> ISP SITE <-> CPE <-> CUSTOMER SITE
>> The CPE is a SITE boundary. It is also a Link-Local Boundary. ULA source
>> packets DO NOT cross the CPE by default it the CPE is properly configured.
> Really? Are you sure you're not confusing LL and ULA addresses? Why
> would CPE filter ULA addresses? In the normal case where the ISP
> provides the customer with a default route, they're like global
Because the CPE is a site boundary.
RFC 7084. Basic Requirements for IPv6 Customer Edge Routers
The IPv6 CE router defaults to acting as the
demarcation point between two networks by providing a ULA boundary, a
multicast zone boundary, and ingress and egress traffic filters.
Which is referenced in the CableLabs documents.
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Mark Andrews, ISC
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