Since friday morning my static IP address block of 32 IP addresses no longer works, for ADSL talktalk Business customer. Internet access via NAT-ted IP addresses that use the routers gateway IP address work fine.
Sent support requests via online form Fri and weekend and never got a human response.
Finallly got through to support monday morning who say theres a fault with static IP addresses specifically and should be resolved today or tuesday!
Quite worrying that they can have a 4-5 day outage on business lines and not really provide more information than above.
So if anyone else has this problem, its not your router. Would be interested to know if others are having this problem.