<div dir="ltr"><br>Ok, I didn't go into the vlans enough.<div><br></div><div>Corp designated I use <a href="http://172.27.0.0/16">172.27.0.0/16</a> for my network. Instead of having 10 projects on one unmaintainable /16 I have broken it into /24's.</div><div>VLAN 800 is <a href="http://172.27.0.0/24">172.27.0.0/24</a>, vlan 801 is <a href="http://172.27.1.0/24">172.27.1.0/24</a>, vlan 802 is <a href="http://172.27.2.0/24">172.27.2.0/24</a>, on through <a href="http://172.27.10.0/24">172.27.10.0/24</a> currently. My core router has the different gateways on it for each vlan and configured a dhcpd helper gateway address of 172.27.0.1. As a result my named.conf has 10 included configurations similar to the one I pasted for each vlan. I'm not seeing any bogons or martians. When dhcpd goes stupid it does it for a couple IP's ( seems random which subnet it begins on ) and then spirals out to every subnet and all requests being ignored with the error messages I pasted.</div><div><br></div><div>Robert</div><div><br></div></div><br><div class="gmail_quote">On Thu, Apr 2, 2015 at 1:57 PM Jim Kinney <<a href="mailto:jim.kinney@gmail.com">jim.kinney@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Thu, 2015-04-02 at 12:43 -0700, Alex Carver wrote:<br>
> On 2015-04-02 12:27, Jim Kinney wrote:<br>
><br>
> >><br>
> >> The problem I'm running into is dhcpd will work great for 3-5 days<br>
> >> and then all of a sudden start throwing errors:<br>
> >> Mar 30 15:50:01 basvc01 dhcpd: DHCPDISCOVER from c8:9c:dc:da:b4:bf via<br>
> >> <a href="http://172.27.4.1" target="_blank">172.27.4.1</a>: not responding (recovering)<br>
> >> Mar 30 15:50:01 basvc01 dhcpd: DHCPDISCOVER from 00:50:56:a0:57:aa via<br>
> >> <a href="http://172.27.6.1" target="_blank">172.27.6.1</a>: not responding (recovering)<br>
> ><br>
> > This is your gateway machine. Why is it on dhcp?<br>
><br>
> Why is his gateway outside of the local subnet? His machines are<br>
> <a href="http://172.27.0.0/24" target="_blank">172.27.0.0/24</a> but his gateway is sitting outside of that.<br>
<br>
Looking at the dhcp address range, the gateway is in the network. But<br>
that 172.27.4.1 is not.<br>
<br>
I'm wondering if the gateway is also on the <a href="http://172.27.4.0/24" target="_blank">172.27.4.0/24</a> network on<br>
another nic but badly misconfigured or it's using multiple IPs per nic.<br>
That will totally crap out dhcp discover.<br>
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