Problem with DoH on Mikrotik Router since yesterday ?!?
Since last night my log is full of:
DoH Server connection error: SSL: handshake failed: unable to get local issuer certificate (6).
There is no DNS resolution anymore ... I had to disable "Verify DoH certificate" to get it working again.
Is any service down?
The certificate for dns.nextdns.io switched to a different CA last night. If you installed the full CA chain as described on the setup page for Mikrotik routers, it should not be an issue.
Please try running this:
/tool fetch url=https://curl.se/ca/cacert.pem
/certificate import file-name=cacert.pem
I also experience intermittent outages with my Mikrotik router, configured to use DoH, without "Verify DoH Certificate" checkmark.
In logs I get:
DoH server connection error: Idle timeout - waiting data
DoH server connection error: remote disconnected while in HTTP exchange
DoH server connection error: SSL: internal error (6)
Then it starts working again after 5-10 minutes, or I need to reboot the router. Not reliable, as I don`t experience this issues with other providers using DoH.
Is anyone else experiencing this also?