[Bug 1874021] ProcEnviron.txt

[Jeroenst]

apport information

** Attachment added: "ProcEnviron.txt"
   https://bugs.launchpad.net/bugs/1874021/+attachment/5357823/+files/ProcEnviron.txt

** 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.
- --- 
+ ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-04-08 (13 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  Package: avahi-daemon 0.7-4ubuntu7
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 5.4.0-25.29-generic 5.4.30
  Tags:  focal
  Uname: Linux 5.4.0-25-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
- modified.conffile..etc.default.avahi-daemon:
-  # 1 = Try to detect unicast dns servers that serve .local and disable avahi in
-  # that case, 0 = Don't try to detect .local unicast dns servers, can cause
-  # troubles on misconfigured networks
-  AVAHI_DAEMON_DETECT_LOCAL=0
-  AVAHI_DAEMON_START=1
- mtime.conffile..etc.avahi.avahi-daemon.conf: 2020-04-21T09:03:32.502101
- mtime.conffile..etc.default.avahi-daemon: 2020-04-21T09:11:39.632727
- --- 
- ProblemType: Bug
- ApportVersion: 2.20.11-0ubuntu27
- Architecture: amd64
- CasperMD5CheckResult: skip
- CurrentDesktop: ubuntu:GNOME
- DistroRelease: Ubuntu 20.04
- InstallationDate: Installed on 2020-04-08 (13 days ago)
- InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
- Package: avahi-daemon 0.7-4ubuntu7
- PackageArchitecture: amd64
- ProcVersionSignature: Ubuntu 5.4.0-25.29-generic 5.4.30
- Tags:  focal
- Uname: Linux 5.4.0-25-generic x86_64
- UpgradeStatus: No upgrade log present (probably fresh install)
- UserGroups: adm cdrom dialout dip lpadmin lxd plugdev sambashare sudo
- _MarkForUpload: True

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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:
  Incomplete

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.
  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-04-08 (13 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  Package: avahi-daemon 0.7-4ubuntu7
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 5.4.0-25.29-generic 5.4.30
  Tags:  focal
  Uname: Linux 5.4.0-25-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True

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