[Dnsmasq-discuss] CNAME resolution

[Doug Carter]

Hi All,

I'm new to dnsmasq and have been running it (version 2.48) on a Linux
server running CentOS 6, with the following options:

  bogus-priv
  domain-needed
  interface=eth0
  interface=lo
  no-dhcp-interface=eth0

It's been working great, but ever so often client browsers (Mac/Windows,
Chrome/Firefox/Safari) hang when trying to resolve CNAMES that many
sites use to serve static content, for example "cdn.macrumors.com". If
I do a lookup during this hang:

; <<>> DiG 9.8.3-P1 <<>> cdn.macrumors.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43978
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;cdn.macrumors.com.             IN      A

;; ANSWER SECTION:
cdn.macrumors.com.      443     IN      CNAME
mrimages.macrumorscomllc.netdna-cdn.com.
mrimages.macrumorscomllc.netdna-cdn.com. 143 IN A 108.161.188.3

---

If I force a page reload on the client, the page loads fine. I'm not
sure if this is a client and/or browser problem or a dnsmasq setting
that I'm missing.

Anyone else had/have this problem?

TIA,

Doug