APNIC's in-addr.arpa zones were bogus

Mitsuru SHIMAMURA simamura at iij.ad.jp
Thu Aug 25 15:26:59 UTC 2022


Hi,

I found our DNSSEC validating full service resolver(unbound) prints bellow validation failer logs.

2022-08-25T12:37:04.808871+09:00 resolver unbound - - - [27541:3] info: validation failure <136.197.63.119.in-addr.arpa. PTR IN>: no keys have a DS with algorithm ECDSAP256SHA256 from 2001:13c7:7002:3000::14 for key 119.in-addr.arpa. while building chain of trust
2022-08-25T13:50:39.964228+09:00 resolver unbound - - - [27541:5] info: validation failure <148.99.253.202.in-addr.arpa. PTR IN>: no keys have a DS with algorithm ECDSAP256SHA256 from 2001:67c:e0::9 for key 202.in-addr.arpa. while building chain of trust

Not only 119 and 202.in-addr.arpa zones were bogus, below is list.

1.in-addr.arpa.
14.in-addr.arpa.
27.in-addr.arpa.
36.in-addr.arpa.
39.in-addr.arpa.
42.in-addr.arpa.
43.in-addr.arpa.
49.in-addr.arpa.
58.in-addr.arpa.
59.in-addr.arpa.
60.in-addr.arpa.
61.in-addr.arpa.
101.in-addr.arpa.
103.in-addr.arpa.
106.in-addr.arpa.
110.in-addr.arpa.
111.in-addr.arpa.
112.in-addr.arpa.
113.in-addr.arpa.
114.in-addr.arpa.
115.in-addr.arpa.
116.in-addr.arpa.
117.in-addr.arpa.
118.in-addr.arpa.
119.in-addr.arpa.
120.in-addr.arpa.
121.in-addr.arpa.
122.in-addr.arpa.
123.in-addr.arpa.
124.in-addr.arpa.
125.in-addr.arpa.
126.in-addr.arpa.
150.in-addr.arpa.
153.in-addr.arpa.
163.in-addr.arpa.
171.in-addr.arpa.
175.in-addr.arpa.
180.in-addr.arpa.
182.in-addr.arpa.
183.in-addr.arpa.
202.in-addr.arpa.
210.in-addr.arpa.
211.in-addr.arpa.
218.in-addr.arpa.
219.in-addr.arpa.
220.in-addr.arpa.
221.in-addr.arpa.
222.in-addr.arpa.
223.in-addr.arpa.

The last bogus log is logged at 18:45(UTC+9).
So, we were affected over 6 hours.

I found the problem after fix.
And I cannot found dnsviz's analyze at the time.

Does this outage only affect our network?

-- 
Mitsuru SHIMAMURA <simamura at iij.ad.jp>
Internet Initiative Japan, Inc.




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