DNS source ip support for glibc gethostbyname API

[Florian Weimer]

* Babu Prasad:

>> On Fri, May 24, 2019, 17:07 Florian Weimer <fweimer@redhat.com> wrote:
>>
>>  * Babu Prasad:
>>
>>  >               could you please tell me that are we(glibc) supporting DNS
>>  > source ip as part of our DNS ip resolution.  ie as part gethostbyname is
>>  > there any option which can carry my source ip also since there is a
>>  > requirement as part of PBR.
>>
>>  Do you mean support for RFC 7871 (Client Subnet in DNS Queries)?

> Hi Florian, Thanks for responding, yes you are right. RFC 7871 support
> is one application, but this can be extended for my case also.

Our position is that this scenario is best handled by a local DNS
resolver running on the same host.  The scope of possible policies
related to this feature is rather large.

Thanks,
Florian