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boundary="------------O0oc3gjOxrPUJh6zwngxVD8y"; protected-headers="v1" From: Karl Denninger To: freebsd-net@freebsd.org Message-ID: Subject: Re: DHCPv6 IA_PD - how-to References: <190e09e6c1a.11450232913849.654798645277119294@marples.name> In-Reply-To: <190e09e6c1a.11450232913849.654798645277119294@marples.name> --------------O0oc3gjOxrPUJh6zwngxVD8y Content-Type: multipart/alternative; boundary="------------LSnjR3BFpDhCtLaqkIZB0HBW" --------------LSnjR3BFpDhCtLaqkIZB0HBW Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gNy8yMy8yMDI0IDEzOjIzLCBSb3kgTWFycGxlcyB3cm90ZToNCj4gSGkNCj4NCj4gLS0t LSBPbiBUdWUsIDIzIEp1bCAyMDI0IDE4OjExOjE4ICswMTAwY3Jvc3MrZnJlZWJzZEBkaXN0 YWwuY29tICB3cm90ZSAtLS0tDQo+DQo+DQo+PiB0bDtkcjsgYW55b25lIGhhdmUgYSBnb29k IElQdjYgbmV0d29yayBzZXR1cCBiYXNlZCBvbiBhbiBJQV9QRCBmcm9tDQo+PiB0aGVpciBw cm92aWRlcj8gQW55IGRldGFpbHMgb3IgYWR2aWNlIHRvIHNoYXJlPw0KPj4NCj4+IFRoZSBj dXJyZW50IHJvdXRlciBpcyB4ODZfNjQgRnJlZUJTRCAxMS54LCBidXQgSeKAmW0gYnVpbGRp bmcgdGhlIEZyZWVCU0QNCj4+IDE0LjEgc3lzdGVtIHRvIHJlcGxhY2UgaXQgbm93LiBXaGF0 IHRvIGluc3RhbGwgb24gaXQgZm9yIHRoaXMgaXMgYSBwZW5kaW5nDQo+PiBxdWVzdGlvbi4N Cj4+DQo+PiBIZWxsbyBhbGwuIEkgaGF2ZSBiZWVuIHJ1bm5pbmcgYSBGcmVlQlNEIHJvdXRl ciBmb3IgeWVhcnMgYW5kIHllYXJzLiBJIGhhdmUNCj4+IHRoaXMgeWVhciBiZWVuIHRyeWlu ZyB0byBmaWd1cmUgb3V0IGhvdyB0byB1c2UgYW4gSVB2NiBhbGxvY2F0aW9uIGZyb20gbXkN Cj4+IHByb3ZpZGVyIChWZXJpem9uIEZpT1MpLiBUaGV5IGFyZSB1c2luZyB0aGUgUEQgZmVh dHVyZSBvZiBESENQdjYgdG8gZ2l2ZQ0KPj4gYSBkZWxlZ2F0aW9uLCBhbmQgbm90IGdpdmVu IGFuIGFkZHJlc3MgKE5BKSB3aGVuIGFza2VkLg0KPj4NCj4+IFRoZXJlIGFyZSwgdW5mb3J0 dW5hdGVseSwgX21hbnlfIHByb2dyYW1zIHRoYXQgY2FuIGhlbHAgbWUgd2l0aCB0aGlzLA0K Pj4gYW5kIGdvb2dsZSB5aWVsZGVkIG5vIGNsZWFyIGJlc3QtcGF0aC4gSSBoYXZlIG5vdCBi ZWVuIGFibGUgdG8gZ2V0DQo+PiBJU0MgZGhjbGllbnQgdG8gd29yayBmb3IgbWUgc28gZmFy LCBhbmQgSSBkaWQgZ2V0IGRoY3BjZCB3b3JraW5nLCBidXQNCj4+IG9ubHkgd2l0aCBjb21t YW5kLWxpbmUgb3B0aW9ucyByYXRoZXIgdGhhbiBjb25maWcgZmlsZSwgYW5kIHRoYXQNCj4+ IGFwcGxpY2F0aW9uIGRvZXNu4oCZdCBoYXZlIHRoZSBzbWFydHMgdG8gY29uZmlndXJlIHRo aW5ncyBiYXNlZCBvbg0KPj4gdGhlIFBELCBzbyBJ4oCZZCBoYXZlIHRvIGNvZGUgYWxsIG9m IHRoYXQgbXlzZWxmLg0KPg0KPiBJJ20gdXBzdHJlYW0gZm9yIGRoY3BjZC4NCj4gQWxsIG9w dGlvbnMgcmVsYXRlZCB0byBQRCBhcmUgY29uZmlndXJhYmxlIGluIHRoZSBkaGNwY2QuY29u Zig1KSBjb25maWd1cmF0aW9uIGZpbGUuIFRoZXJlIGFyZSBhbHNvIHNvbWUgZXhhbXBsZXMu DQo+DQo+DQo+IFdoYXQgYXJlIHlvdSBzdHJ1Z2dsaW5nIHdpdGggc3BlY2lmaWNhbGx5Pw0K Pg0KPg0KPiBSb3kNCg0KSGkgUm95Ow0KDQpJJ2QgbGlrZSB0byByZXBsaWNhdGUgdGhpcyB0 aGF0IGlzIGN1cnJlbnRseSBiZWluZyBzZW50IHVwIHZpYSBkaGNwNmMsIA0Kd2hpY2ggaXMg bm90IHF1aXRlLWNsZWFyIHRvIG1lIGZyb20gdGhlIGRvY3Mgb24gaG93IHRvIGRvIHRoYXQu DQoNCiMNCiMgVGhpcyBjb25maWd1cmF0aW9uIHdpbGwgYXR0ZW1wdCB0byBnZXQgLzU2IG9y IGEgLzYwIGZyb20gdGhlDQojIElTUCBhbmQgYXNzaWduIGEgLzY0IGludGVybmFsbHkuDQoj IE5vdGUgdGhhdCBpZiB5b3UgaGF2ZSBhIC82MCB5b3UgY2FuIGhhdmUgZm91ciAvNjRzIGRl ZmluZWQ7IGlmIHlvdSBoYXZlIGENCiMgLzU2IHRoZW4gb2J2aW91c2x5IHlvdSBjYW4gaGF2 ZSAxNiBpbnRlcm5hbCBuZXR3b3Jrcy7CoCBGb3IgbW9zdCAiaG91c2UiDQojIHNpemUgbmV0 d29ya3MgZm91ciBzZXBhcmF0ZSBkZWxpbmVhdGlvbnMgaXMgZW5vdWdoLCBmb3IgbW9zdCAi bW9kZXJhdGUiDQojIHNpemVkIGNvcnBvcmF0ZSBlbnZpcm9ubWVudHMgMTYgaXMgZW5vdWdo LsKgIEJFIEFXQVJFIFRIQVQgVEhFIFNMQS1MRU4gTVVTVA0KIyBNQVRDSCBUSEUgRElGRkVS RU5DRSBCRVRXRUVOIFRIRSBMT0NBTCBQUkVGSVggQU5EIFRIRSBSRU1PVEUgT05FIcKgIElm DQojIHlvdSBhc2sgZm9yIGEgLzU2IHRoZW4gc2xhLWxlbiBpcyA4LCBpZiB5b3UgYXNrIGZv ciBhIC82MCB0aGVuIHRoZSBzbGEtbGVuDQojIGlzIDQgKGRpZmZlcmVuY2UgYmV0d2VlbiB0 aGUgcmVxdWVzdGVkIHByZWZpeCBsZW5ndGggYW5kIDY0LCANCnJlc3BlY3RpdmVseS4pDQoj DQoNCmludGVyZmFjZSBpZ2IwIHsNCiDCoMKgwqDCoCBzZW5kIGlhLXBkIDE7DQogwqDCoMKg wqAgc2VuZCBpYS1uYSAxOw0KIMKgwqDCoMKgIHNlbmQgcmFwaWQtY29tbWl0Ow0KIMKgwqDC oMKgIHNjcmlwdCAiL3Vzci9sb2NhbC9ldGMvZGhjcDZjLnNjcmlwdCI7DQp9Ow0KDQppZC1h c3NvYyBuYSAxIHsNCg0KfTsNCg0KaWQtYXNzb2MgcGQgMSB7DQogwqAgcHJlZml4IDo6LzU2 IDE4MDA7DQoNCiDCoCBwcmVmaXgtaW50ZXJmYWNlIGlnYjEgew0KIMKgwqDCoCBzbGEtaWQg MDsNCiDCoMKgwqAgc2xhLWxlbiA4Ow0KIMKgIH07DQoNCn07DQoNCmlnYjEgaXMgdGhlICJu b3JtYWwiIGludGVybmFsIG5ldHdvcms7IGlnYjAgaXMgdGhlIGV4dGVybmFsIG9uZS4NCg0K VGhlIElTUCBoYW5kcyBvdXQgLzU2cyAoYWx0aG91Z2ggYXQgb25lIHRpbWUgSSBjb3VsZCBj aG9vc2UgZWl0aGVyIGEgLzU2IA0Kb3IgLzYwKTsgSSBoYXZlIHJvdXRpbmVzIGluIHRoZSBz Y3JpcHQgZmlsZSB0aGF0IHRoZW4gZ2VuZXJhdGUgZHluYW1pYyANCnVwZGF0ZXMgZm9yIERO UyBzbyB0aGUgZ2F0ZXdheSBoYXMgaXRzIHBvaW50ZXJzIHVwZGF0ZWQgaWYvd2hlbiB0aGUg DQphZGRyZXNzIGNoYW5nZXMgKEkgcnVuIG15IG93biB6b25lcykNCg0KSXRzIG5vdCBlbnRp cmVseS1jbGVhciBob3cgdG8gcmVwbGljYXRlIHRoYXQgaW4gdGhlIGNvbmZpZyBmaWxlIGZv ciANCmRoY3BjZDsgSSBjYW4gZmlndXJlIG91dCB0aGUgc2NyaXB0IEknbSBzdXJlLCBidXQg dGhlIGJhc2UgY29uZmlnIGlzIG5vdCANCmNsZWFyIHRvIG1lLg0KDQotLSANCkthcmwgRGVu bmluZ2VyDQprYXJsQGRlbm5pbmdlci5uZXQNCi9UaGUgTWFya2V0IFRpY2tlci8NCi9bUy9N SU1FIGVuY3J5cHRlZCBlbWFpbCBwcmVmZXJyZWRdLw0K --------------LSnjR3BFpDhCtLaqkIZB0HBW Content-Type: text/html; 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On 7/23/2024 13:23, Roy Marples wrote:= 
Hi

---- On Tue, 23 Jul 2024 18:11:18 +0100 cross+freebsd@distal.com wrote ----



tl;dr; anyone have a good =
IPv6 network setup based on an IA_PD from
their provider? Any details or advice to share?

The current router is x86_64 FreeBSD 11.x, but I=E2=80=99m building the F=
reeBSD
14.1 system to replace it now. What to install on it for this is a pendin=
g
question.

Hello all. I have been running a FreeBSD router for years and years. I ha=
ve
this year been trying to figure out how to use an IPv6 allocation from my=

provider (Verizon FiOS). They are using the PD feature of DHCPv6 to give
a delegation, and not given an address (NA) when asked.

There are, unfortunately, _many_ programs that can help me with this,
and google yielded no clear best-path. I have not been able to get
ISC dhclient to work for me so far, and I did get dhcpcd working, but
only with command-line options rather than config file, and that
application doesn=E2=80=99t have the smarts to configure things based on
the PD, so I=E2=80=99d have to code all of that myself.


I'm upstream for dhcpcd.
All options related to PD are configurable in the dhcpcd.conf(5) configur=
ation file. There are also some examples.


What are you struggling with specifically?


Roy

Hi Roy;

I'd like to replicate this that is currently being sent up via dhcp6c, which is not quite-clear to me from the docs on how to do that.

#
# This configuration will attempt to get /56 or a /60 from the
# ISP and assign a /64 internally.
# Note that if you have a /60 you can have four /64s defined; if you have a
# /56 then obviously you can have 16 internal networks.=C2=A0 For m= ost "house"
# size networks four separate delineations is enough, for most "moderate"
# sized corporate environments 16 is enough.=C2=A0 BE AWARE THAT TH= E SLA-LEN MUST
# MATCH THE DIFFERENCE BETWEEN THE LOCAL PREFIX AND THE REMOTE ONE!=C2=A0 If
# you ask for a /56 then sla-len is 8, if you ask for a /60 then the sla-len
# is 4 (difference between the requested prefix length and 64, respectively.)
#

interface igb0 {
=C2=A0=C2=A0=C2=A0=C2=A0 send ia-pd 1;
=C2=A0=C2=A0=C2=A0=C2=A0 send ia-na 1;
=C2=A0=C2=A0=C2=A0=C2=A0 send rapid-commit;
=C2=A0=C2=A0=C2=A0=C2=A0 script "/usr/local/etc/dhcp6c.script";
= };

id-assoc na 1 {

};

id-assoc pd 1 {
=C2=A0 prefix ::/56 1800;

=C2=A0 prefix-interface igb1 {
=C2=A0=C2=A0=C2=A0 sla-id 0;
=C2=A0=C2=A0=C2=A0 sla-len 8;
=C2=A0 };
=C2=A0
};

igb1 is the "normal" internal network; igb0 is the external one.

The ISP hands out /56s (although at one time I could choose either a /56 or /60); I have routines in the script file that then generate dynamic updates for DNS so the gateway has its pointers updated if/when the address changes (I run my own zones)

Its not entirely-clear how t= o replicate that in the config file for dhcpcd; I can figure out the scri= pt I'm sure, but the base config is not clear to me.

--
Karl Denninger
karl@denninger.net
The Market Ticker
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