That is the workaround I am currently using, although not ideal to me. What I've found appears to be a bug with the router firmware itself. The router should respond to DNS requests via both TCP and...

Model : Hardware Version : Firmware Version : ISP : For DNS queries that are too large for UDP (over 512 bytes), TCP is used ( https://tools.ietf.org/html/rfc5966). In my case, this happens with...