Hi,
Before we move the prefix management draft forward, I've been enhancing
the corresponding demonstration ASA to be more realistic. The new version
isn't quite ready for public release yet, but I have made it capable
of dynamically assigning prefixes of any reasonable length on demand
(the previous version was limited to a few pre-defined prefix lengths).
Doing this, I realised that it's a very simple enhancement to include
IPv4 prefixes (represented as IPv4-mapped IPv6 addresses). For fun, you
can look at the output from the ASA below, which shows how it can
split a /104 prefix into multiple longer prefixes when asked to
assign a /120 (known in IPv4 as a /24).
So to my question: should we add an "IP version" flag to the
PrefixManager objective? It would be easy to do, and would allow one
to write an ASA that manages prefixes for both protocols.
Regards
Brian
[output edited only by deleting noise]
_MainThread 3268 GRASP startup function exiting
_MainThread 3268 ==========================
_MainThread 3268 ASA Pfxm2 is starting up.
_MainThread 3268 ==========================
_MainThread 3268 Pfxm2 is a demonstration Autonomic Service Agent.
_MainThread 3268 It supports the IPv6 Edge Prefix Management
_MainThread 3268 objective 'PrefixManager' and its companion
_MainThread 3268 'PrefixManager.Params'.
Act as master? Y/N:y
_MainThread 3268 This ASA will provide an initial prefix pool.
_MainThread 3268 Also, it will supply default parameters for other ASAs.
Default prefix for pool? Y/N:n
Prefix length for pool (3..127):104
Manual prefix entry? Y/N:y
Enter IPv6 prefix:::ffff:10.0.0.0
_MainThread 3268 Prefix pool contents:
_MainThread 3268 ::ffff:a00:0 / 104
>>> p = get_from_pool(120)
>>> ipaddress.IPv6Address(p)
IPv6Address('::ffff:aff:ff00')
>>> dump_pool()
_MainThread 3268 Prefix pool contents:
_MainThread 3268 ::ffff:a00:0 / 105
_MainThread 3268 ::ffff:a80:0 / 106
_MainThread 3268 ::ffff:ac0:0 / 107
_MainThread 3268 ::ffff:ae0:0 / 108
_MainThread 3268 ::ffff:af0:0 / 109
_MainThread 3268 ::ffff:af8:0 / 110
_MainThread 3268 ::ffff:afc:0 / 111
_MainThread 3268 ::ffff:afe:0 / 112
_MainThread 3268 ::ffff:aff:0 / 113
_MainThread 3268 ::ffff:aff:8000 / 114
_MainThread 3268 ::ffff:aff:c000 / 115
_MainThread 3268 ::ffff:aff:e000 / 116
_MainThread 3268 ::ffff:aff:f000 / 117
_MainThread 3268 ::ffff:aff:f800 / 118
_MainThread 3268 ::ffff:aff:fc00 / 119
_MainThread 3268 ::ffff:aff:fe00 / 120
>>>
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