Re: Address of nonexistent hosts...?

[Ryan Schmidt]

> On Sep 29, 2016, at 5:57 PM, Carlo Tambuatco  wrote:
> 
>> On Thursday, September 29, 2016, Lawrence Velázquez  
>> wrote:
>> > On Sep 29, 2016, at 6:04 PM, Carlo Tambuatco 
>> > wrote:
>> >
>> > Just installed a port and got this message:
>> >
>> > Warning: Your DNS servers incorrectly claim to know the address of
>> > nonexistent hosts. This may cause checksum mismatches for some ports.
>> > See this page for more information:
>> > 
>> >
>> > So I visited the site but it doesn’t look like any of the cases apply
>> > to me
>> 
>> Are you sure? What happens if you visit a nonexistent domain in your
>> browser?
> 
> vq
> 
> It sends me to a search page apologizing that it could not find the page was 
> looking for but offers alternative suggestions. So I guess this means AT is 
> breaking relevant internet standards?

Yes.


> Then this means I should switch to a different DNS server?

Yes.


> I'm a bit of a newb at that sort of thing, not my speciality. How do I go 
> about doing that?  

Apple menu > System Preferences > Network > Advanced > DNS

Click the "+" button, add "8.8.8.8" to the list of DNS servers.

Click the "+" button, add "8.8.4.4" to the list of DNS servers.

(These are the Google public DNS servers.)

Click OK, click Apply.

Or, you can configure your router to automatically distribute that DNS server 
address to all connected clients; instructions vary depending on your model of 
router.


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Re: Address of nonexistent hosts...?

[Carlo Tambuatco]

On Thursday, September 29, 2016, Lawrence Velázquez 
wrote:

> > On Sep 29, 2016, at 6:04 PM, Carlo Tambuatco  >
> > wrote:
> >
> > Just installed a port and got this message:
> >
> > Warning: Your DNS servers incorrectly claim to know the address of
> > nonexistent hosts. This may cause checksum mismatches for some ports.
> > See this page for more information:
> > 
> >
> > So I visited the site but it doesn’t look like any of the cases apply
> > to me
>
> Are you sure? What happens if you visit a nonexistent domain in your
> browser?
>
> vq
>

It sends me to a search page apologizing that it could not find the page
was looking for but offers alternative suggestions. So I guess this means
AT is breaking relevant internet standards? Then this means I should
switch to a different DNS server? I'm a bit of a newb at that sort of
thing, not my speciality. How do I go about doing that?
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Re: Address of nonexistent hosts...?

[Lawrence Velázquez]

> On Sep 29, 2016, at 6:04 PM, Carlo Tambuatco 
> wrote:
> 
> Just installed a port and got this message:
> 
> Warning: Your DNS servers incorrectly claim to know the address of
> nonexistent hosts. This may cause checksum mismatches for some ports.
> See this page for more information:
> 
> 
> So I visited the site but it doesn’t look like any of the cases apply
> to me

Are you sure? What happens if you visit a nonexistent domain in your
browser?

vq
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Re: Address of nonexistent hosts...?

[Ryan Schmidt]

> On Sep 29, 2016, at 5:04 PM, Carlo Tambuatco  wrote:
> 
> Just installed a port and got this message: 
> 
> Warning: Your DNS servers incorrectly claim to know the address of 
> nonexistent hosts. This may cause checksum mismatches for some ports. See 
> this page for more information: 
> 
> 
> So I visited the site but it doesn’t look like any of the cases apply to me, 
> and I haven’t contacted my ISP since so far no checksum mismatches have been 
> found, so not sure if anything needs to be done on my part…

If your DNS server claims that nonexistent hostnames exist, your DNS server is 
broken, and you should tell your DNS provider (perhaps your ISP) to fix their 
DNS server to conform to the relevant standards, and until they do, you should 
switch to a DNS server that does conform (perhaps Google DNS: 8.8.8.8 / 
8.8.4.4).

You'll only run into problems if you try to install a port that has to build 
from source, and lists a download location on a hostname that no longer exists. 
That may be a rare circumstance, but wouldn't you rather not run into problems, 
even rarely?



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