Wireshark cannot access dumpcap

Hello,

Wireshark cannot capture from netware interfaces.

When launching as normal user

"Couldn't run /usr/bin/dumpcap in child process: permission denied

And when as root, capture works but wireshark is unhappy:

Lua: Error during loading:
 [string "/usr/share/wireshark/init.lua"]:44: dofile has been disabled due to running Wireshark as superuser. See https://wiki.wireshark.org/CaptureSetup/CapturePrivileges for help in running Wireshark as an unprivileged user.

Fresh install 16.04 beta 2 apt-get upgrade 31 mars.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: wireshark-qt 2.0.1+g59ea380-3build1
ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
Uname: Linux 4.4.0-16-generic i686
ApportVersion: 2.20-0ubuntu3
Architecture: i386
CurrentDesktop: Unity
Date: Thu Mar 31 21:13:49 2016
ExecutablePath: /usr/bin/wireshark
InstallationDate: Installed on 2016-03-29 (2 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta i386 (20160323)
ProcEnviron:
 PATH=(custom, no user)
 SHELL=/bin/bash
 LANG=fr_FR.UTF-8
 LANGUAGE=fr_FR
 XDG_RUNTIME_DIR=<set>
SourcePackage: wireshark
UpgradeStatus: No upgrade log present (probably fresh install)