[Xorp-users] questions about IPv6 get_link_local_address

[XORP at sipxx.com]

That's a reasonable scenario, I suppose. If users need to specify a 
parameter, they can, and if they use the default-system-config in 
addition, they get the rest from default.

There were some other issues with this parameter from my experimentation.
If I have an interface in the configuration file that uses 
'default-system-config' and nothing else, it works as expected.
But then, if I remove the directive from xorpsh->configure and replace 
it with an address specification and commit the change, the address does 
not get configured, I had to save the configuration in a file and 
restart rtrmgr in order for it to get configured accordingly. This was 
for an IPv4 address.


Ben Greear wrote:
> XORP at sipxx.com wrote:
>> I am not so sure it really should do this totally automatically just 
>> because OSPFv3 requires a particular kind of address. So may other 
>> modules and this can become very non-transparent if each module just 
>> goes about acquiring its own parameters.
>> This what the 'default-system-config' parameter really seems to be 
>> good for.
>> What I would like to suggest however, is to provide additional 
>> qualifiers to this parameter so one can differentiate what kind of 
>> system configuration gets imported.
>> so for example:
>> ....
>>     default-system-config {
>>        address-link-local-ipv6: true
>>        address-link-local-ipv4: false
>>        address-ipv4: false
>>        address-ipv6: true
>>     }
>>   
> How about we just probe for anything not specified by the user?  We 
> can do the probe
> in fea so all of the modules can get the same information.
>
> Thanks,
> Ben
>