I recently switched to Vodafone Superfast 100 broadband but I am experiencing repeated brief dropouts (maybe up to 30 seconds). Symptoms include
- Teams calls pop up messages about "Bad network quality", sound can fail or I can be disconnected
- Attempts to access any web page are slow or fail with errors "This site can't be reached" and DNS_PROBE_STARTED or if the dropout goes on for a while DNS_PROBE_FINISHED_NO_INTERNET
- For the longer dropouts the network icon in the Windows taskbar will switch to the "no internet" symbol
Moving the laptop closer to the router seems to mitigate the problem but not fix it entirely.
Here is an extract from the logs:
18.11.2021 20:45:16 system Error Failed to send DHCPV6 message to ff02::1:2 (Permission denied)
18.11.2021 20:45:16 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:16 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:15 firewall Warning [203638.947143] DROP wan in: IN=pppoe-wan OUT= MAC= src=[deleted] DST=[deleted] LEN=44 TOS=0x00 PREC=0x00 TTL=54 ID=47369 PROTO=TCP SPT=39860 DPT=23 WINDOW=32940 RES=0x00 SYN URGP=0 MARK=0x8000000
18.11.2021 20:45:15 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:15 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:13 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:13 data Error failed to send packet: Network is unreachable
18.11.2021 20:45:13 data Error failed to send packet: Network is unreachable
18.11.2021 20:44:58 data Error failed to send packet: Network is unreachable
18.11.2021 20:44:49 data Error failed to send packet: Network is unreachable
18.11.2021 20:44:48 data Error failed to send packet: Network is unreachable
18.11.2021 20:44:47 data Error failed to send packet: Network is unreachable
18.11.2021 20:44:14 firewall Warning [203578.608193] DROP wan in: IN=pppoe-wan OUT= MAC= src=[deleted] DST=[deleted] LEN=44 TOS=0x00 PREC=0x00 TTL=40 ID=11738 PROTO=TCP SPT=28488 DPT=10934 WINDOW=1024 RES=0x00 SYN URGP=0 MARK=0x8000000
I tried contacting Vodafone but they have not been all that helpful - today they claimed there were no dropouts since Tuesday morning which you can see from the logs is incorrect.
Rebooting the router has not helped but would a factory reset be any use? How can I tell whether I have the latest firmware (logging into my router and attempting a firmware update gave a "firmware update failed" error message.
