[Bloat] DHCP-PD and cerowrt

[Bloat] DHCP-PD and cerowrt

[Dave Taht]

Dear Maxim:

> Updated to smoketest10.
> Those features are slightly tested now. After installing the necessary
> packages, 3g and pppoe work, dhcp6c also seems to be OK, but requires some
> messing with the /etc/config/dhcp6c.conf file.

What sorts of 'messing about' were required? (please send conf file)

How big a PD (/64? /60? /56? what?) do they delegate?

With comcast starting to go live with their dual stack trial, they
only will be delegating a /64 at first,

http://blog.comcast.com/2011/11/ipv6-deployment-technology.html

which blows up the routing-only concept in cerowrt when used with
classic autonegotiated /64 ipv6 addressing. However I'd planned for
that, in having AHCP available and babel be the default routing
protocols. AHCP distributes /128s across all interfaces, and in
combination with babel, lets you move transparently from wired to
wireless domains and back again, which is very liberating and an
advancement on the state of the art in home networking.

so having hooks to AHCP and babel in there as alternative means to
distribute /128s across all the routed interfaces would be exciting.
If I knew what they were.

Regardless of this particular hook, I'd like to make dhcpv6-pd
enablement part of the next release, by default, rather than as an
optional package.

-- 
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
FR Tel: 0638645374
http://www.bufferbloat.net

Re: [Bloat] DHCP-PD and cerowrt

[Maxim Kharlamov]

[-- Attachment #1.1: Type: text/plain, Size: 2477 bytes --]

Hi Dave,

dhcp6c config file attached. My ISP use /48 prefixes. Basically I had to
change 'enabled' to '1', set the interface to use for the client (ge00),
set the interfaces to which prefixes should be assigned (loopback and se00
for now) and set sla_len to 16 for them (48 + 16 = 64).
It looks like dhcp6c is able to get a prefix, but this prefix is not
properly integrated with the rest of cerowrt. See the ifconfig.out attached
- only the interfaces explicitly mentioned in the dhcp6c config file got
proper ipv6 addresses (2406:*) eventually, the others are getting 2002:*
global unicast addresses.
Also, for some reason, dhcp6c refuses to assign ipv6 prefix to ge00 (if I
change loopback to ge00 at the end of the config file, it won't start).
Computers behind the router are also getting 2002:* addresses and work
through 6-to-4.


Thanks,
Maxim

On 11 November 2011 01:17, Dave Taht <dave.taht@gmail.com> wrote:

> Dear Maxim:
>
> > Updated to smoketest10.
> > Those features are slightly tested now. After installing the necessary
> > packages, 3g and pppoe work, dhcp6c also seems to be OK, but requires
> some
> > messing with the /etc/config/dhcp6c.conf file.
>
> What sorts of 'messing about' were required? (please send conf file)
>
> How big a PD (/64? /60? /56? what?) do they delegate?
>
> With comcast starting to go live with their dual stack trial, they
> only will be delegating a /64 at first,
>
> http://blog.comcast.com/2011/11/ipv6-deployment-technology.html
>
> which blows up the routing-only concept in cerowrt when used with
> classic autonegotiated /64 ipv6 addressing. However I'd planned for
> that, in having AHCP available and babel be the default routing
> protocols. AHCP distributes /128s across all interfaces, and in
> combination with babel, lets you move transparently from wired to
> wireless domains and back again, which is very liberating and an
> advancement on the state of the art in home networking.
>
> so having hooks to AHCP and babel in there as alternative means to
> distribute /128s across all the routed interfaces would be exciting.
> If I knew what they were.
>
> Regardless of this particular hook, I'd like to make dhcpv6-pd
> enablement part of the next release, by default, rather than as an
> optional package.
>
> --
> Dave Täht
> SKYPE: davetaht
> US Tel: 1-239-829-5608
> FR Tel: 0638645374
> http://www.bufferbloat.net
>



-- 
Thanks,
Max

[-- Attachment #1.2: Type: text/html, Size: 3165 bytes --]

[-- Attachment #2: dhcp6c --]
[-- Type: application/octet-stream, Size: 1647 bytes --]

config 'dhcp6c' 'basic'
	option 'enabled' '1'				# 1 = enabled; 0 = disabled
	option 'interface' 'ge00'			# This is the interface the DHCPv6 client will run on
	option 'dns' 'dnsmasq'				# Which DNS server you run (only dnsmasq currently supported)
	option 'debug' '0'				# 1 = enable debugging; 0 = disable debugging
	
	# Send options (1 = send; 0 = do not send)
	option 'pd' '1'					# Prefix Delegation
	option 'na' '0'					# Non-Temporary Address
	option 'rapid_commit' '1'			# Rapid Commit
	
	# Request options (1 = request; 0 = do not request)
	option 'domain_name_servers' '1'
	option 'domain_name' '0'
	option 'ntp_servers' '0'
	option 'sip_server_address' '0'
	option 'sip_server_domain_name' '0'
	option 'nis_server_address' '0'
	option 'nis_domain_name' '0'
	option 'nisp_server_address' '0'
	option 'nisp_domain_name' '0'
	option 'bcmcs_server_address' '0'
	option 'bcmcs_server_domain_name' '0'
	
	# Override the used DUID, by default it is derived from the interface MAC
	# The given value must be uppercase and globally unique!
	#option 'duid' '00:03:00:06:D8:5D:4C:A5:03:F2'

	# Script to run when a reply is received
	option 'script' '/usr/bin/dhcp6c-state'

# Define one or more interfaces on which prefixes should be assigned
config 'interface' 'loopback'
	option 'enabled' '1'				# 1 = enabled; 0 = disabled
	option 'sla_id' '0'				# Site level aggregator identifier specified in decimal (subnet)
	option 'sla_len' '16'				# Site level aggregator length (64 - size of prefix being delegated)
							# e.g. /60 from ISP -> 64 - 60 = 4
config 'interface' 'se00'
	option 'enabled' '1'
	option 'sla_id' '1'
	option 'sla_len' '16'



[-- Attachment #3: ifconfig.out --]
[-- Type: application/octet-stream, Size: 5161 bytes --]

6to4-ge01 Link encap:IPv6-in-IPv4  
          inet6 addr: 2002:6f45:c2fa::1/16 Scope:Global
          inet6 addr: ::111.69.194.250/128 Scope:Compat
          UP RUNNING NOARP  MTU:1280  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

ge00      Link encap:Ethernet  HWaddr 20:4E:7F:5A:C6:B6  
          inet6 addr: fe80::224e:7fff:fe5a:c6b6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1378 errors:0 dropped:7 overruns:0 frame:0
          TX packets:1166 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:873400 (852.9 KiB)  TX bytes:145190 (141.7 KiB)
          Interrupt:5 

gw00      Link encap:Ethernet  HWaddr 22:4E:7F:5A:C6:B6  
          inet addr:172.30.42.129  Bcast:172.30.42.159  Mask:255.255.255.224
          inet6 addr: 2002:6f45:c2fa:4::1/64 Scope:Global
          inet6 addr: fe80::204e:7fff:fe5a:c6b6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:65 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:11443 (11.1 KiB)

gw01      Link encap:Ethernet  HWaddr 22:4E:7F:5A:C6:B7  
          inet6 addr: fe80::204e:7fff:fe5a:c6b7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:71 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:9821 (9.5 KiB)

gw11      Link encap:Ethernet  HWaddr 22:4E:7F:5A:C6:B9  
          inet6 addr: fe80::204e:7fff:fe5a:c6b9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:67 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:9253 (9.0 KiB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          inet6 addr: 2406:e000:e1ad:0:200:ff:fe00:0/64 Scope:Global
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:76 errors:0 dropped:0 overruns:0 frame:0
          TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:12058 (11.7 KiB)  TX bytes:12058 (11.7 KiB)

mon.sw00  Link encap:UNSPEC  HWaddr 20-4E-7F-5A-C6-B5-00-48-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13258 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32 
          RX bytes:2148746 (2.0 MiB)  TX bytes:0 (0.0 B)

pppoe-ge00 Link encap:Point-to-Point Protocol  
          inet addr:111.69.194.250  P-t-P:111.69.17.16  Mask:255.255.255.255
          inet6 addr: fe80::a948:1c35:ea2b:64e9/10 Scope:Link
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:1167 errors:0 dropped:0 overruns:0 frame:0
          TX packets:954 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:834431 (814.8 KiB)  TX bytes:117330 (114.5 KiB)

se00      Link encap:Ethernet  HWaddr 22:4E:7F:5A:C6:B5  
          inet addr:172.30.42.1  Bcast:172.30.42.31  Mask:255.255.255.224
          inet6 addr: 2002:6f45:c2fa:1::1/64 Scope:Global
          inet6 addr: 2406:e000:e1ad:1:204e:7fff:fe5a:c6b5/64 Scope:Global
          inet6 addr: fe80::204e:7fff:fe5a:c6b5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1104 errors:0 dropped:8 overruns:22 frame:0
          TX packets:1137 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:148200 (144.7 KiB)  TX bytes:818694 (799.5 KiB)
          Interrupt:4 

sw00      Link encap:Ethernet  HWaddr 20:4E:7F:5A:C6:B5  
          inet addr:172.30.42.65  Bcast:172.30.42.95  Mask:255.255.255.224
          inet6 addr: 2002:6f45:c2fa:2::1/64 Scope:Global
          inet6 addr: fe80::224e:7fff:fe5a:c6b5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:61 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:11486 (11.2 KiB)

sw10      Link encap:Ethernet  HWaddr 20:4E:7F:5A:C6:B7  
          inet addr:172.30.42.97  Bcast:172.30.42.127  Mask:255.255.255.224
          inet6 addr: 2002:6f45:c2fa:3::1/64 Scope:Global
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:40 
          RX bytes:0 (0.0 B)  TX bytes:292 (292.0 B)

Re: [Bloat] DHCP-PD and cerowrt

[Jim Gettys]

On 11/10/2011 07:17 AM, Dave Taht wrote:
> Dear Maxim:
>
>> Updated to smoketest10.
>> Those features are slightly tested now. After installing the necessary
>> packages, 3g and pppoe work, dhcp6c also seems to be OK, but requires some
>> messing with the /etc/config/dhcp6c.conf file.
> What sorts of 'messing about' were required? (please send conf file)
>
> How big a PD (/64? /60? /56? what?) do they delegate?
>
> With comcast starting to go live with their dual stack trial, they
> only will be delegating a /64 at first,
>
> http://blog.comcast.com/2011/11/ipv6-deployment-technology.html
>
> which blows up the routing-only concept in cerowrt when used with
> classic autonegotiated /64 ipv6 addressing. However I'd planned for
> that, in having AHCP available and babel be the default routing
> protocols. AHCP distributes /128s across all interfaces, and in
> combination with babel, lets you move transparently from wired to
> wireless domains and back again, which is very liberating and an
> advancement on the state of the art in home networking.
>
> so having hooks to AHCP and babel in there as alternative means to
> distribute /128s across all the routed interfaces would be exciting.
> If I knew what they were.
>
> Regardless of this particular hook, I'd like to make dhcpv6-pd
> enablement part of the next release, by default, rather than as an
> optional package.
>

Note that Comcast (and TWC, as far as I can tell) do plan to delegate
larger prefixes.

The existing IPv6 home routers only support a single /64 today.  So this
means they can start this phase of the dual stack service
without having to deploy pd; but I think they are already testing pd
internally.
                - Jim

Re: [Bloat] DHCP-PD and cerowrt

[Jeremy Visser]

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On 11/11/2011, at 13:27, Jim Gettys wrote:
> The existing IPv6 home routers only support a single /64 today.  So this
> means they can start this phase of the dual stack service
> without having to deploy pd; but I think they are already testing pd
> internally.

For the record, Internode, an ISP down under, has already deployed DHCPv6-PD based IPv6 into production for residential and business.

http://ipv6.internode.on.net/

Most of the home routers they sell fully support DHCPv6-PD (obviously they're being selective about which routers they actually choose to sell).

They're the only ones to do IPv6 in Australia, so I only have a small sample size, so do ignore me when I say 100% of IPv6-enabled ISPs in Australia use DHCPv6-PD.

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