[Dnsmasq-discuss] Avoid conflicts between dnsmasq and systemd-resolved.

[Geert Stappers]

On Fri, Sep 18, 2020 at 08:08:07AM +0800, Hongyi Zhao wrote:
> On Thu, Sep 17, 2020 at 07:25:43AM +0800, Hongyi Zhao wrote:
> >
> > But I still can't figure out what's the wrong configuration or
> > **bug** (may or may not exist, I'm not sure.) in dnsmasq itself
> > triggered this problem.
> 
> I can confirm this problem is caused by the response to type=ANY
> request of dnsmasq. And when I substitute the corresponding job done
> by dnsmasq with dnsproxy, the problem will be solved.

I fail to see the dnsmasq problem.


> See following for more information:

I did


> 
> werner at X10DAi-01:~$ pgrep -ax dnsproxy
> 50211 ./dnsproxy -l 127.0.0.1 -p 6053 --all-servers --fastest-addr -u

port 6053


> tls://8.8.4.4 -u tls://8.8.8.8 -u tls://1.0.0.1 -u tls://1.1.1.1 -u
> tls://9.9.9.9 -u tls://9.9.9.10 -u tls://149.112.112.10
> 50212 ./dnsproxy -u 114.114.114.114 -u 114.114.115.115 -u
> 114.114.114.119 -u 114.114.115.119 -u 114.114.114.110 -u
> 114.114.115.110 -u 223.5.5.5 -u 223.6.6.6 -u 180.76.76.76 -u
> 112.124.47.27 -u 114.215.126.16 --fastest-addr --all-servers -l
> 127.0.0.1 -p 6054
> werner at X10DAi-01:~$ pgrep -ax dnsmasq
> 50243 /usr/local/sbin/dnsmasq --port=53 -c10240 --localise-queries

port 53


> --server=127.0.0.1#6053

port 6053


> --conf-dir=/home/werner/Public/anti-gfw/dns/dnsmasq/conf/conf-dir,*.conf
> -C /home/werner/Public/anti-gfw/dns/dnsmasq/conf/dnsmasq.conf
> werner at X10DAi-01:~$ dig www.baidu.com ANY @127.0.0.1

Probably port 53

 
> ; <<>> DiG 9.16.1-Ubuntu <<>> www.baidu.com ANY @127.0.0.1
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51448
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;www.baidu.com.            IN    ANY
> 
> ;; ANSWER SECTION:
> www.baidu.com.        1133    IN    CNAME    www.a.shifen.com.
> 
> ;; Query time: 36 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)

Yes indeed port 53


> ;; WHEN: Fri Sep 18 08:03:37 CST 2020
> ;; MSG SIZE  rcvd: 69
> 
> Regards,
> HY


Regards
Geert Stappers
-- 
Silence is hard to parse