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<div class="moz-cite-prefix">On 6/13/16 7:17 PM, Nishal Goburdhan
wrote:<br>
</div>
<blockquote
cite="mid:63F24A0E-F2AC-44B1-A397-7385D2A6FBAD@controlfreak.co.za"
type="cite">On 13 Jun 2016, at 15:29, Stephen Honlue wrote:
<br>
<br>
<blockquote type="cite">Hi Dick,
<br>
<br>
The DHCP configuration looks ok.
<br>
You should:
<br>
<br>
- Make sure you have two interfaces(You can use sub-interfaces)
of your
<br>
server belonging each to the appropriate Vlan.
<br>
- Make sure each interface(sub-interface) should have an IP
address
<br>
withing the correct subnet(DHCP will only give IPs out of an
interface
<br>
that has an IP withing a defined subnet).
<br>
</blockquote>
<br>
is this really true? </blockquote>
In his case, he has two subnets:<br>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">#1
subnet6 2001:43f8:2a0:4::/64 {</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">
range6 2001:43f8:2a0:4:2::1 2001:43f8:2a0:4:2::ffff;</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">}</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">#2
subnet6 2001:43f8:2a0:d::/64 {</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">
range6 2001:43f8:2a0:d:13::1 2001:43f8:2a0:d:13::ffff;</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">}</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">ISC
needs to know out of which interface should IPs from a specific
subnet be given out, therefore, the server requires to have an
interface configured with an IPv6 address out of the defined
subnet.<br>
</p>
<blockquote
cite="mid:63F24A0E-F2AC-44B1-A397-7385D2A6FBAD@controlfreak.co.za"
type="cite">i haven’t used ISC’s dhcpd in a few years, but the
above two are (or, were) not requirements for dhcpd for ipv4,
since you could easily configure a relay-agent. <br>
</blockquote>
In this case, the agent will be the one to be able to talk to both
vlans. <br>
<blockquote
cite="mid:63F24A0E-F2AC-44B1-A397-7385D2A6FBAD@controlfreak.co.za"
type="cite"> it would seem odd to me that these are now
requirements for v6, and a quick read through seems to indicate
that there is indeed dhcp relay support (in which case your dhcp
server does not need to be directly connected to each network), </blockquote>
Yes you are right, the above declaration, is considering the fact a
relay is not being used.<br>
<blockquote
cite="mid:63F24A0E-F2AC-44B1-A397-7385D2A6FBAD@controlfreak.co.za"
type="cite">as long as the dhcpd server config, has the necessary
stanzas for each network.
<br>
<br>
<br>
<blockquote type="cite">- Make sure your hosts seat in the
appropriate vlan so that they can
<br>
send DHCP requests to the right interface.d
<br>
<br>
Can you please share the physical topology with us?
<br>
</blockquote>
<br>
that could be useful; debug messages from the server would also
be useful too.
<br>
<br>
i’d suggest checking that your native/untagged vlan on the switch
matches what you expect to send; while setting up for the recent
AIS event, we ran into a similar situation, and tracked it down to
config on an unfamiliar switch :-)
<br>
<br>
—n.
<br>
<br>
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<br>
</blockquote>
<br>
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