moving ISP need to know WAN details

[robertkwild]

ok this is very weird

i updated my WAN interface to

IPv4 Configuration Type - DHCP

Option Modifiers - dhcp-client-identifier “abc12345@skydsl|abc12345”

i then lose internet access but funny is when i revery back my my previous ISP zen ie

IPv4 - PPPoE

username - my_user

password - my_password

i get internet back and my opnsense dashboard sees a WAN gateway of 2.127.xxx.xxx and when i do "whats my ip" i get

My Public IPv4:90.201.xxx.xxx

My Public IPv6:Not Detected

My IP Location:London, ENG GB

My ISP:SKY UK Limited

i dont understand as my wan settings are still zen?

[robertkwild]

can anyone help me please why this is happening?

[Chrisee]

@robertkwild it is likely because the exchange is accepting the DHCPv6 PD set up which does not require a log in at all but only works on roughly 80% of connectiond. If it works I wouldn't worry.

[robertkwild]

even tho my wan config is still on the zen details?

[robertkwild]

@Chriseeits def not dhcp as ive set ipv6 to "none" instead of "DHCPv6" but still my ipv4 is still set to my old zen PPPoE details

[Chrisee]

@robertkwild assuming you are in the UK not Ireland there are only two ways of connecting to a Sky service one is DHCPv4 option 61 or DHCPv6 PD according to Sky's network architect. Ireland is different.

[robertkwild]

tbh im new to sky and im not very happy with there speeds at all, they say im on 75mb but the speed fluctuates and i get no where near 75, maybe 50mb

[-rpnz-]

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@robertkwild wrote:

i dont understand then, if you can put anything bogos in the string whats the point of it?

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The original reason for this option has long gone, now its presence remains a requirement primarily so we we can distinguish the Sky Hub as a DHCPv4 client from other DHCPv4 clients in your home, that may leak out over the WAN.

i.e. if your LAN is incorrectly plugged directly into the ONT, or when the Sky Hub bridges all ports together upon boot before it works out which is the WAN port.

[robertkwild]

i just talked to sky and because i havnt plugged in there router they think my internet is still not activated because of this, this makes sense

even when I try to change my opnsense firewall to option 61 it doesnt work, whats wierd is it connects using my my zen pppoe settings

[robertkwild]

ok im trying to get my sky BB VDSL username and password by following this guide

https://www.georgebuckingham.com/articles/sky-fibre-router-vdsl-password/

ive found my option 61 client identifier but when i right click i dont get copy > as printable text i get


https://i.postimg.cc/wvsHRj2P/Screenshot-2024-12-16-140608.png

any help please

[-rpnz-]

Prior to switching CPEs or reconfiguring your CPE, be sure to click "Disconnect" if that feature is available, and disconnected the WAN interface (phone line if VDSL, or Ethernet to the ONT if FTTP), physically whilst reconfiguring, ideally for at least 15mins to make sure any old sessions are cleared out.

Switch from PPPoE to DHCP (aka. IPoE)

Leave the DHCPv4 Option 61 as "abc12345@skydsl|abc12345". The content doesn't matter, as long as it's present and follows that format.

Make sure both DHCPv4 and DHCPv6-PD clients are enabled on the WAN.

- If using FTTP: Make sure there's no VLAN tag on the WAN interface 

- If using VDSL2: Make sure the WAN interface is tagged using VLAN ID 101

[robertkwild]

so in the "send options" i put in just

"abc12345@skydsl|abc12345"

or this

dhcp-client-identifier "abc12345@skydsl|abc12345"

[-rpnz-]

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@robertkwild wrote:

so in the "send options" i put in just

"abc12345@skydsl|abc12345"

or this

dhcp-client-identifier "abc12345@skydsl|abc12345"

---

just the string within the quote marks, excluding the quote marks themselves.

[robertkwild]

you mean this

[mae-3]

@robertkwild 

If you connect via FTTC (VDSL2), the modem or OPNsense must have a VLAN tag 101 on the WAN interface, Openreach VDSL2/G.fast modems usually have the VLAN already switched to VLAN tag 101 and third-party modems often don't in a pure bridge or other equipment you place in a bridge modem, eg: a Fritz!Box 7530 in a bridge is an example.