[AfrIPv6-Discuss] AfrIPv6-Discuss ISC-DHCPv6

[Nishal Goburdhan]

On 13 Jun 2016, at 15:29, Stephen Honlue wrote:

> Hi Dick,
>
> The DHCP configuration looks ok.
> You should:
>
> - Make sure you have two interfaces(You can use sub-interfaces) of 
> your
> server belonging each to the appropriate Vlan.
> - Make sure each interface(sub-interface) should have an IP address
> withing the correct subnet(DHCP will only give IPs out of an interface
> that has an IP withing a defined subnet).

is this really true?  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.  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), as 
long as the dhcpd server config, has the necessary stanzas for each 
network.


> - Make sure your hosts seat in the appropriate vlan so that they can
> send DHCP requests to the right interface.d
>
> Can you please share the physical topology with us?

that could be useful;  debug messages from the server would also be 
useful too.

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  :-)

—n.