There are dozens and dozens of discussions about this problem, but no solution.

Two errors, which lead to frequent disconnections:

Recv no OFFER, DHCP Service unavailable

Send DISCOVER with request ip 0.0.0.0 and unicast.....

I'm using TIM (Italy) Fiber FTTC with Public Dynamic IP with PPPoE and VLAN ID needed.

I have no disconnection problems using the modem provided by my ISP.

How do i fix this? I am already using the latest firmware version. Is there some wrong setting, or is it possible to insert the urgency for the correction of this error in the release of a next firmware update?