[Bug 1874021] [NEW] avahi-browse -av is empty, mdns not working in arduino ide

[Jeroenst]

Public bug reported:

When I started the arduino IDE my port list is empty. This list relies
on multicast DNS which is served by avahi.

When running the avahi-browse -av command on ubuntu 18.04 I get a list
of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.

The avahi-daemon is running. And when executing netstat -nlp | grep 5353
I see avahi-daemon is listening. When also running tcpdump port 5353 I
see mdns packages arriving. But still avahi-browse -av is empty.

iptables -A shows no rules and policies are accept
ufw is disabled

I also removed apparmor but also that didn't make any difference.

On both ubuntu 18.04 and 20.04 the avahi version is 0.7.

** Affects: avahi (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: focal

** Description changed:

  When I started the arduino IDE my port list is empty. This list relies
  on multicast DNS which is served by avahi.
  
  When running the avahi-browse -av command on ubuntu 18.04 I get a list
  of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.
+ 
+ The avahi-daemon is running. And when executing netstat -nlp | grep 5353
+ I see avahi-daemon is listening. When also running tcpdump port 5353 I
+ see mdns packages arriving. But still avahi-browse -av is empty.

** Description changed:

  When I started the arduino IDE my port list is empty. This list relies
  on multicast DNS which is served by avahi.
  
  When running the avahi-browse -av command on ubuntu 18.04 I get a list
  of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.
  
  The avahi-daemon is running. And when executing netstat -nlp | grep 5353
  I see avahi-daemon is listening. When also running tcpdump port 5353 I
  see mdns packages arriving. But still avahi-browse -av is empty.
+ 
+ iptables -A shows no rules and policies are accept
+ ufw is disabled

** Description changed:

  When I started the arduino IDE my port list is empty. This list relies
  on multicast DNS which is served by avahi.
  
  When running the avahi-browse -av command on ubuntu 18.04 I get a list
  of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.
  
  The avahi-daemon is running. And when executing netstat -nlp | grep 5353
  I see avahi-daemon is listening. When also running tcpdump port 5353 I
  see mdns packages arriving. But still avahi-browse -av is empty.
  
  iptables -A shows no rules and policies are accept
  ufw is disabled
+ 
+ I also removed apparmor but also that didn't make any difference.

** Description changed:

  When I started the arduino IDE my port list is empty. This list relies
  on multicast DNS which is served by avahi.
  
  When running the avahi-browse -av command on ubuntu 18.04 I get a list
  of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.
  
  The avahi-daemon is running. And when executing netstat -nlp | grep 5353
  I see avahi-daemon is listening. When also running tcpdump port 5353 I
  see mdns packages arriving. But still avahi-browse -av is empty.
  
  iptables -A shows no rules and policies are accept
  ufw is disabled
  
  I also removed apparmor but also that didn't make any difference.
+ 
+ On both ubuntu 18.04 and 20.04 the avahi version is 0.7.

-- 
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https://bugs.launchpad.net/bugs/1874021

Title:
  avahi-browse -av is empty, mdns not working in arduino ide

Status in avahi package in Ubuntu:
  New

Bug description:
  When I started the arduino IDE my port list is empty. This list relies
  on multicast DNS which is served by avahi.

  When running the avahi-browse -av command on ubuntu 18.04 I get a list
  of al mdns devices. On ubuntu 20.04 the're no mdns devices reported.

  The avahi-daemon is running. And when executing netstat -nlp | grep
  5353 I see avahi-daemon is listening. When also running tcpdump port
  5353 I see mdns packages arriving. But still avahi-browse -av is
  empty.

  iptables -A shows no rules and policies are accept
  ufw is disabled

  I also removed apparmor but also that didn't make any difference.

  On both ubuntu 18.04 and 20.04 the avahi version is 0.7.

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