DNScrypt dnscrypt keeps saying address is already in use

[Crockan]

This may sound like a silly question but does anyone know how to solve it?
When I try to get dnscrypt-proxy to listen to ipv6, it always shows that the address is already in use.

listen udp [::1]:53: bind: address already in use

Is there any way that would allow me to see what is using the address?

Grateful for anyone's help

 

[dave14305]

Is there any way that would allow me to see what is using the address?

netstat -nlup | grep ":53 "

 

[SomeWhereOverTheRainBow]

This may sound like a silly question but does anyone know how to solve it?
When I try to get dnscrypt-proxy to listen to ipv6, it always shows that the address is already in use.

listen udp [::1]:53: bind: address already in use

Is there any way that would allow me to see what is using the address?

Grateful for anyone's help

That is because dnsmasq uses it. Don't mess with anything on port 53 unless you make sure dnsmasq is not using it on port 53. DNSmasq binds it self to 127.0.0.1:53 and ::1:53 addresses at port 53. Dnscrypt-proxy cannot share the same port. so you must set dnsmasq to port=0. there is no need to use ::1:53, when ipv6 can traverse, 127.0.0.1 or 127.0.1.1 as well. It is a common misconception that ::1:53 must be used in order for ipv6 traffic to work, but the way dnscrypt proxy is set with the Asuswrt-Merlin dnscrypt installer, 127.0.1.1:53 is used and is sufficient for both ipv4 and ipv6 traffic since it is an internal address forwarding traffic internally to dnsmasq.

 

[Crockan]

netstat -nlup | grep ":53 "

Thank you so much!

 

[Crockan]

Many Thanks for the very detailed explanation! Thank you for the clarification, I see.

That is because dnsmasq uses it. Don't mess with anything on port 53 unless you make sure dnsmasq is not using it on port 53. DNSmasq binds it self to 127.0.0.1:53 and ::1:53 addresses at port 53. Dnscrypt-proxy cannot share the same port. so you must set dnsmasq to port=0. there is no need to use ::1:53, when ipv6 can traverse, 127.0.0.1 or 127.0.1.1 as well. It is a common misconception that ::1:53 must be used in order for ipv6 traffic to work, but the way dnscrypt proxy is set with the Asuswrt-Merlin dnscrypt installer, 127.0.1.1:53 is used and is sufficient for both ipv4 and ipv6 traffic since it is an internal address forwarding traffic internally to dnsmasq.