Model :

Hardware Version :

Firmware Version :

ISP :

Model : Archer C9

Hardware Version : v1

Firmware Version : 3.17.0 Build 20150514 Rel.70681n

ISP : Comcast


The router DNS relay does not appear to accept traffic on TCP port 53. UDP traffic is fine. A DNS query that requires TCP (due to response size) fails with a connection refused error. I don't see any settings in the router that will fix this.

$ dig
;; Truncated, retrying in TCP mode.
;; Connection to 192.168.0.1#53(192.168.0.1) for failed: connection refused.


$ nc -uv 192.168.0.1 53
found 0 associations
found 1 connections:
1: flags=82
outif (null)
src 192.168.0.113 port 56688
dst 192.168.0.1 port 53
rank info not available


Connection to 192.168.0.1 port 53 [udp/domain] succeeded!


$ nc -v 192.168.0.1 53
nc: connectx to 192.168.0.1 port 53 (tcp) failed: Connection refused