Re: ping-pong phenomenon with p2p links & /127 prefixes

[Ole Troan <ot@cisco.com>]

>>>> one could equally just make a convention to use link-locals with fe80::1 and fe80::2
>>>> and /128s on each side if one needed global addresses for sources to traceroute etc.
>>> 
>>> no, ping/monitoring/data-collection fails in this case. (or needs to
>>> be overhauled to collect/test/monitor in new/fun ways)
>> 
>> 
>> how & why? please, give a more specific example.
> 
> please ping my router, it's interface address is: fe80::20e:cff:fe5c:b001/64
> 
> my monitoring system can't ping this to ensure liveness of the
> interface either :(

but they can ping whatever global /128 you put on that interface, so why doesn't that solve the problems?

cheers,
Ole