<div dir="ltr">I guess you need to DNS Sub-domain delegation.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 5, 2019 at 8:51 PM Kevin Darcy <<a href="mailto:kevin.darcy@fcagroup.com">kevin.darcy@fcagroup.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Publish all 3 NSes.<div><br></div><div>Publish MX records with primary/failover preferencing.</div><div><br></div><div>Use a load-balancer (free or commercial, software/hardware/cloud-based) to direct the web traffic.</div><div><br></div><div> - Kevin</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 5, 2019 at 11:16 AM Roberto Carna <<a href="mailto:robertocarna36@gmail.com" target="_blank">robertocarna36@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear people, I have two sites:<div><br></div><div>- Main site with an Internet link and two BIND services (DNS1 y DNS2) and a /28 block, and web and mail services supported</div><div>- Backup site with a second Internet link and a BIND service (DNS3) and another /28 block</div><div><br></div><div>When the Internet link from main site is DOWN, the web and mail traffic come through the backup site to main site crossing a L2L. So I need to change the IP's of the FQDN hosts I have supported in the DNS3 in order to continue offering services (web and mail). How can I do this automatically? Is there any way that "something" monitors the main Internet link and in case it is DOWN automatically order to modify the FQDN records in DNS3 ???</div><div><br></div><div>Thanks a lot and regards!!!</div></div>
_______________________________________________<br>
Please visit <a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a> to unsubscribe from this list<br>
<br>
bind-users mailing list<br>
<a href="mailto:bind-users@lists.isc.org" target="_blank">bind-users@lists.isc.org</a><br>
<a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a><br>
</blockquote></div>
_______________________________________________<br>
Please visit <a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a> to unsubscribe from this list<br>
<br>
bind-users mailing list<br>
<a href="mailto:bind-users@lists.isc.org" target="_blank">bind-users@lists.isc.org</a><br>
<a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a><br>
</blockquote></div>