# GL-MT6000 (Flint 2) WAN link flapping on Sky FTTP (Ireland) – Sky router works fine

**URL:** <https://forum.gl-inet.com/t/gl-mt6000-flint-2-wan-link-flapping-on-sky-fttp-ireland-sky-router-works-fine/66612>\
**Category:** Router\
**Created:** [January 13, 2026, 1:12am UTC](https://forum.gl-inet.com/t/gl-mt6000-flint-2-wan-link-flapping-on-sky-fttp-ireland-sky-router-works-fine/66612 "2026-01-13T01:12:42Z")\
**Posts on this page:** 1\
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**Author:** ![will.qiu](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/w/b38774/32.png) [@will.qiu](https://forum.gl-inet.com/u/will.qiu)\
**Post date:** [January 13, 2026, 10:01am UTC](https://forum.gl-inet.com/t/gl-mt6000-flint-2-wan-link-flapping-on-sky-fttp-ireland-sky-router-works-fine/66612/2 "2026-01-13T10:01:15Z")

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Hi

According to information from the Sky forum, it appears that there are two different authentication methods used in Ireland.

You may need to ask your ISP which one is used, or try both to see which works for you:

1. **PPPoE dial-up** with **VLAN ID** configured to **10**.  

2. **DHCP Option 61** : Please refer to the configuration here:  
[Sky dsl dhcp 61 - #23 by Geist-JP-01](https://forum.gl-inet.com/t/sky-dsl-dhcp-61/46043/23)

Refer: [Are you allowed to use your own router instead of ... | Sky Community](https://helpforum.sky.com/t5/Broadband/Are-you-allowed-to-use-your-own-router-instead-of-the-sky-hub/td-p/4577888)

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