Bug#858098: xrdp not started if IPv6 disabled

[Gabor Boros]

Package: xrdp
Version: 0.9.1-7
Severity: important
Tags: ipv6

Dear Maintainer,

If disable IPv6 with put the next two lines into /etc/sysctl.conf xrdp and xrdp-sesman not started.

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1


Output of "sudo systemctl status xrdp":

● xrdp.service - xrdp daemon
   Loaded: loaded (/lib/systemd/system/xrdp.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2017-03-18 09:50:44 CET; 1min 50s ago
     Docs: man:xrdp(8)
           man:xrdp.ini(5)

márc 18 09:50:44 DEB-TEST3 systemd[1]: Starting xrdp daemon...
márc 18 09:50:44 DEB-TEST3 sh[428]: chmod: cannot access '/var/run/xrdp': No such file or directory
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp.service: Control process exited, code=exited status=1
márc 18 09:50:44 DEB-TEST3 systemd[1]: Failed to start xrdp daemon.
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp.service: Unit entered failed state.
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp.service: Failed with result 'exit-code'.


Output of "sudo systemctl status xrdp-sesman":

● xrdp-sesman.service - xrdp session manager
   Loaded: loaded (/lib/systemd/system/xrdp-sesman.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2017-03-18 09:50:44 CET; 2min 27s ago
     Docs: man:xrdp-sesman(8)
           man:sesman.ini(5)
 Main PID: 427 (code=exited, status=0/SUCCESS)

márc 18 09:50:43 DEB-TEST3 systemd[1]: Starting xrdp session manager...
márc 18 09:50:44 DEB-TEST3 xrdp-sesman[419]: (419)(140256795116864)[DEBUG] libscp initialized
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp-sesman.service: PID file /run/xrdp/xrdp-sesman.pid not readable (yet?) after start: No such file or directory
márc 18 09:50:44 DEB-TEST3 systemd[1]: Started xrdp session manager.
márc 18 09:50:44 DEB-TEST3 xrdp-sesman[427]: (427)(140256795116864)[INFO ] starting xrdp-sesman with pid 427
márc 18 09:50:44 DEB-TEST3 xrdp-sesman[427]: (427)(140256795116864)[ERROR] bind error on port '3350': 99 (Cannot assign requested address)
márc 18 09:50:44 DEB-TEST3 xrdp-sesman[427]: (427)(140256795116864)[DEBUG] Closed socket 7 (AF_INET6 :: port 0)
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp-sesman.service: Control process exited, code=exited status=1
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp-sesman.service: Unit entered failed state.
márc 18 09:50:44 DEB-TEST3 systemd[1]: xrdp-sesman.service: Failed with result 'exit-code'.


"Content" of "/var/log/xrdp.log":

This file is empty.


Content of "/var/log/xrdp-sesman.log":

[20170318-09:50:44] [DEBUG] libscp initialized
[20170318-09:50:44] [INFO ] starting xrdp-sesman with pid 427
[20170318-09:50:44] [ERROR] bind error on port '3350': 99 (Cannot assign requested address)
[20170318-09:50:44] [DEBUG] Closed socket 7 (AF_INET6 :: port 0)


-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-2-amd64 (SMP w/1 CPU core)
Locale: LANG=hu_HU.UTF-8, LC_CTYPE=hu_HU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xrdp depends on:
ii  adduser              3.115
ii  init-system-helpers  1.47
ii  libc6                2.24-9
ii  libfuse2             2.9.7-1
ii  libjpeg62-turbo      1:1.5.1-2
ii  libopus0             1.2~alpha2-1
ii  libpam0g             1.1.8-3.5
ii  libssl1.1            1.1.0e-1
ii  libx11-6             2:1.6.4-3
ii  libxfixes3           1:5.0.3-1
ii  libxrandr2           2:1.5.1-1
ii  lsb-base             9.20161125
ii  ssl-cert             1.0.38

Versions of packages xrdp recommends:
pn  fuse      <none>
ii  xorgxrdp  0.9.1-7

Versions of packages xrdp suggests:
pn  guacamole  <none>

Versions of packages xorgxrdp depends on:
ii  libc6                                  2.24-9
pn  xorg-input-abi-24                      <none>
ii  xserver-xorg-core [xorg-video-abi-23]  2:1.19.2-1

Versions of packages xorgxrdp recommends:
pn  xorg  <none>

Versions of packages xrdp is related to:
pn  vnc-server           <none>
pn  xserver-xorg-legacy  <none>

-- no debconf information