Multiple intermittent internet disconnections (L34) - related to multiple IPv6 Input & Forward drop?

[xaraci]

Been having multiple intermittent broadband disconnections (Sky Superfast 80 with WiFi max router) between midnight to 05:00 hrs today. Occasionally, connection re-establishes itself, other times have to go through the Sky troubleshooting process webpages to re-establish. Sky mobile app service checker occasionally indicates a problem but as the reconnection occurs relatively quickly (usual no longer than 3 minutes), retesting once reconnected shows no issues.

Also had a problem last Monday 14 when the internet disconnected for around 30 minutes - at that time the service checker indicated there was an external problem and an engineer would be booked but as the internet resumed I contacted Sky Technical Services but they suggested it might be worthwhile for an OpenReach engineer to still inspect the external equipment (presumably the local cabinet)., this will hopefully be done Friday.

Was looking at the Firewall logs from the router and there are multiple entries over the last 90 days including today & 14th Oct when I noticed the other disconnection

FW.IPv6 INPUT drop , 7386 Attempts, 2024/9/14 23:58:00 Firewall Blocked

FW.IPv6 FORWARD drop , 677 Attempts, 2024/9/14 23:58:00 Firewall Blocked

FW.IPv6 INPUT drop , 68443 Attempts, 2024/9/13 01:56:29 Firewall Blocked

FW.IPv6 FORWARD drop , 12643 Attempts, 2024/9/13 01:56:29 Firewall Blocked

FW.IPv6 FORWARD drop , 926 Attempts, 2024/10/17 05:00:49 Firewall Blocked

FW.IPv6 INPUT drop , 766 Attempts, 2024/10/17 05:00:49 Firewall Blocked

FW.IPv6 FORWARD drop , 8232 Attempts, 2024/10/17 00:54:20 Firewall Blocked

FW.IPv6 INPUT drop , 2361 Attempts, 2024/10/17 00:54:20 Firewall Blocked

FW.IPv6 FORWARD drop , 3270 Attempts, 2024/10/14 13:27:54 Firewall Blocked

FW.IPv6 INPUT drop , 14254 Attempts, 2024/10/14 13:27:54 Firewall Blocked

FW.IPv6 INPUT drop , 4469 Attempts, 2024/10/11 16:46:54 Firewall Blocked

FW.IPv6 FORWARD drop , 1582 Attempts, 2024/10/11 16:45:35 Firewall Blocked

FW.IPv6 INPUT drop , 32931 Attempts, 2024/10/10 13:45:44 Firewall Blocked

FW.IPv6 FORWARD drop , 9601 Attempts, 2024/10/10 13:44:26 Firewall Blocked

FW.IPv6 FORWARD drop , 11582 Attempts, 2024/10/3 00:58:14 Firewall Blocked

FW.IPv6 INPUT drop , 76951 Attempts, 2024/10/3 00:55:36 Firewall Blocked

FW.IPv6 INPUT drop , 6934 Attempts, 2024/7/27 04:07:06 Firewall Blocked

FW.IPv6 FORWARD drop , 433 Attempts, 2024/7/27 04:07:06 Firewall Blocked

FW.IPv6 INPUT drop , 182 Attempts, 2024/7/26 05:12:00 Firewall Blocked

FW.IPv6 FORWARD drop , 12969 Attempts, 2024/7/26 05:12:00 Firewall Blocked

FW.IPv6 FORWARD drop , 7369 Attempts, 2024/8/25 02:00:32 Firewall Blocked

FW.IPv6 INPUT drop , 59763 Attempts, 2024/8/25 01:59:49 Firewall Blocked

FW.IPv6 INPUT drop , 128 Attempts, 2024/8/13 16:40:41 Firewall Blocked

FW.IPv6 FORWARD drop , 9020 Attempts, 2024/8/13 16:37:20 Firewall Blocked

Ii'm presuming the internet disconnections and these IPv6 Forward and Input drops are related...but is there anything I can do to prevent these disconnections?

[cookiemonsteruk]

@xaraci 

It appears to be have been reported on xfinity /comcast and Reddit in the US and as sky is part of comcast their advice would be gospel

It is the firewall blocking incoming traffic which is ok so long as you have no port forwarding rules.

Is your superfast 80 via an old mastersocket or ont ?

It may be beneficial to contact sky to run diagnostics

Contact sky as below

Follow the link and choose need more help

https://www.sky.com/help/home/

If in the Republic of Ireland go to the bottom of the page and change the flag to Republic of Ireland

[cookiemonsteruk]

@xaraci 

Also are you using a vpn?

[xaraci]

Many thanks for your input @cookiemonsteruk.

No port forwarding rules in place.

Superfast 80 with router into pre-filtered master socket (ie no need for filters on any other phone socket).

Only occasionally use VPN but not in use during this morning or 14 Oct.

Forgot to mention, nothing of interest in either of the other troubleshooting logs from the router. Firewall is set to "low".

This may seem a bit paranoid but as an on-line PC gamer, I believe there is some method by which an opponent can try & interrupt my connection to the game server, slowing my inputs or even terminating my connection thereby resulting in them winning the match. These

IPv6 input & forward drops couldn't be related to this sort of "attack" could it?

[TimmyBGood]

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@xaraci wrote:

This may seem a bit paranoid but as an on-line PC gamer, I believe there is some method by which an opponent can try & interrupt my connection to the game server, slowing my inputs or even terminating my connection thereby resulting in them winning the match. 

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Possibly , but it would be more usual for a Denial of Service attack to knock your connection offline entirely.

[cookiemonsteruk]

@xaraci 

It was mentioned on reddit that it may be a bot pinging for vulnerabilities

[xaraci]

Thanks for your messages @TimmyBGood & @cookiemonsteruk 

Looks as though these IPv6 forward & input drops are the cause of the internet disconnections rather than a result of a disconnection (for some other reason).

I'll check with Sky to see if the Open Reach engineer found any faults and ask if they can offer any solutions.