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

Dr Eberhard W Lisse el at lisse.NA
Thu Dec 3 10:25:10 UTC 2015

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
shrike.uz.ac.zw.	86400	IN	A
ns1.telone.co.zw.	14400	IN	A
ns2.telone.co.zw.	14400	IN	A
mail.healthnet.org.zw.	14400	IN	A
ns1.zispa.org.zw.	86400	IN	A

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

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their A records in the child zone file and keeping their outdated IP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...


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)
Dr. Eberhard W. Lisse  \        / Obstetrician & Gynaecologist (Saar)
el at lisse.NA            / *     |   Telephone: +264 81 124 6733 (cell)
PO Box 8421             \     /
Bachbrecht, Namibia     ;____/

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