Le 20/06/2019 à 20:33, Pascal Hambourg a écrit :
> Le 18/06/2019 à 18:19, Reco a écrit :
>> On Tue, Jun 18, 2019 at 04:45:59PM +0200, Pascal Hambourg wrote:
>>> Le 18/06/2019 à 16:11, Reco a écrit :
>>>>
>>>> The problem can be 'solved' by announcing specific IP routes to
>>>> each and
>>>> every host on both sites. Yes, it's gross.
>>>
>>> Not all hosts accept route announcements (using which protocol ?).
>>
>> DHCP seems to be the most straightforward way of doing this.
>
> DHCP provides two options to advertise static routes.
>
> The old "static-routes" option assumes classfull routing and does not
> advertise a netmask or prefix length. It is derived by the client from
> the address class :
> class A -> /8
> class B -> /16
> class C -> /24
> If the actual netmask does not match the classful one, the option is
> unusable.
>
> The newer "classless-static-routes" option advertises the netmask (or
> prefix length, not sure), but is not supported by all DHCP clients and
> servers. IIRC, the ISC DHCP client and server do not natively support
> it, you have to define it as a custom option.
>
>
When you know that classless routing is older than classes were when
CIDR appeared...
