[AfrICANN-discuss] Zimbabwe Holds its First DNS Workshop, Could this be a Step towards Better DNS Management?

[Dr Eberhard W Lisse]

There is more :-)-O

All teleone name servers allow AXFR (!), so I look at .ZW and find that
they have an interesting concept of glue records:

mahobho.uz.ac.zw.	86400	IN	A	196.4.80.241
shrike.uz.ac.zw.	86400	IN	A	196.4.80.242
ns1.telone.co.zw.	14400	IN	A	194.133.122.47
ns2.telone.co.zw.	14400	IN	A	194.133.122.42
mail.healthnet.org.zw.	14400	IN	A	196.44.176.80
ns1.zispa.org.zw.	86400	IN	A	196.2.64.16

ns.gta.zw. 		86400 	IN 	A 	209.88.90.3
ns1.mango.zw. 		86400 	IN 	A 	196.29.32.61

The latter 2 are necessary, the former 6 are not.

Glue records in the parent zone file are often forgotten when changing
their A records in the child zone file and keeping their outdated IP
addresses in the glue (in the parent zone file) can give you very,
very interesting failures.

Putting them into a "grandparent" zone file will make figuring this
out even more difficult...


el


On 2015-12-03 11:10, Mike Silber wrote:
> On 03/12/2015 11:03, Dr Eberhard W Lisse wrote:
>> Mike,
>>
>> IPv6 is not an issue :-)-O
>>
>> Since they don't have DNSSEC EDNS doesn't matter, I think.
>>
>> ...
>> If either telone.co.zw failed to resolve or the data center went
>> off line, I don't know what would happen since ns2.gip.net does not
>> know about itself.
>>
>> Probably failure to resolve ZW.
> Thank you my umfundisi (teacher)
[...]
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