[as112-ops] ROA for AS112 prefixes

[Joe Abley]

On 5 Jul 2021, at 08:43, Aleksi Suhonen <as112-ops at trex.fi> wrote:

> This issue has been revisited about once a year, and I believe DNS-OARC is slowly working on some solution. However, there is a big problem:
> 
> Most AS112 addresses are assigned directly by IANA, but ROAs can only be created for address space assigned by RIRs.

From RFC 7534 section 7.1:

   The autonomous system number 112, the IPv4 prefix 192.175.48.0/24,
   and the IPv6 prefix 2620:4f:8000::/48 were assigned by ARIN.

   The IPv4 prefix 192.31.196.0/24 and the IPv6 prefix 2001:4:112::/48,
   used for DNAME redirection AS112 service, were assigned by the IANA
   [RFC7535].

Confirmation of the assertions in the first paragraph are easy to verify via whois.arin.net <http://whois.arin.net/>.

I am not aware of any relative measurements of popularity of the delegation (RFC 7534) and redirection (RFC 7535) approaches, but since the reverse mappings for RFC 1918 nets use delegation I would imagine that that's where the majority of the traffic is.

Since the two routes associated with that approach (192.175.48.0/24 and 2620:4f:8000::/48) were both assigned by ARIN, since the origin AS was also assigned by ARIN and since all three of those number resources are registered at ARIN as being managed by DNS-OARC, I don't see many obstacles here.


Joe
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