Archer C7 AC1750 Does not work with Large DNS Responses (Mac)
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Archer C7 AC1750 Does not work with Large DNS Responses (Mac)
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 login.windows.net, but I'm sure there are plenty of others. The C7 does not run a DNS server that is open to TCP traffic, so the DNS queries that result in large responses fail, causing an unresolvable hostname.
As a workaround, I changed my dhcp settings to provide my ISPs dns servers to each all of my dhcp clients. This bypasses the DNS server on the router. While not ideal, it works for the time being.
Is there any way to set up the C7 so it listens for DNS traffic via TCP? If not, sounds like a bug as it's not following the DNS spec.
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 login.windows.net, but I'm sure there are plenty of others. The C7 does not run a DNS server that is open to TCP traffic, so the DNS queries that result in large responses fail, causing an unresolvable hostname.
As a workaround, I changed my dhcp settings to provide my ISPs dns servers to each all of my dhcp clients. This bypasses the DNS server on the router. While not ideal, it works for the time being.
Is there any way to set up the C7 so it listens for DNS traffic via TCP? If not, sounds like a bug as it's not following the DNS spec.
