Hello Bart,
I did make a Wireshark trace and didn't spot any obvious problems.
So I had to dig a bit deeper :)
Then I saw a lot of DNS requests for wpad.[mydomain.com] and they were actually being forwarded to my domain registrar for resolving. Because that probably doesn't resolve to anything that makes sense to Windows, I can imagine that slows things down quite a bit.
I now manually override the wpad subdomain in unbound DNS on my Opnsense box and that seems to solve the issue. The Opnsense documentation actually states that there is a "WPAD records" button in the unbound DNS config, but I couldn't find it. Has it been removed ?
I did make a Wireshark trace and didn't spot any obvious problems.
So I had to dig a bit deeper :)
Then I saw a lot of DNS requests for wpad.[mydomain.com] and they were actually being forwarded to my domain registrar for resolving. Because that probably doesn't resolve to anything that makes sense to Windows, I can imagine that slows things down quite a bit.
I now manually override the wpad subdomain in unbound DNS on my Opnsense box and that seems to solve the issue. The Opnsense documentation actually states that there is a "WPAD records" button in the unbound DNS config, but I couldn't find it. Has it been removed ?