Raspbian -systemd doesn't start tinc interface properly

[kjansik]

Raspbian doesnt start tinc deamon on boot properly with Systemd:

tinc.service:
[Unit]
Description=Tinc VPN
After=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/true
ExecReload=/bin/true
WorkingDirectory=/etc/tinc

[Install]
WantedBy=multi-user.target

and [email protected]:
[Unit]
Description=Tinc net %i
PartOf=tinc.service
ReloadPropagatedFrom=tinc.service

[Service]
Type=simple
WorkingDirectory=/etc/tinc/%i
ExecStart=/usr/sbin/tincd -n %i -D -d3 --logfile
ExecReload=/usr/sbin/tincd -n %i -kHUP
TimeoutStopSec=5
Restart=always
RestartSec=60

[Install]
WantedBy=tinc.service

after boot is ifconfig status:
mojtinc: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet6 fe80::a94d:42fc:d57c:ad7a prefixlen 64 scopeid 0x20
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500
after tinc restart:
pi@raspberrypi:~ $ sudo systemctl restart tinc
pi@raspberrypi:~ $ ifconfig

mojtinc: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 192.168.1.5 netmask 255.255.0.0 destination 192.168.1.5
inet6 fe80::53ea:5266:7a5b:a660 prefixlen 64 scopeid 0x20
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500

I tried to change unit file:
[Unit]
Description=Tinc VPN
Wants=network-online.target
After=network-online.target

but without any success.
Any idea?

[kjansik]

Workaround:
ExecStartPre=/bin/sleep 30,
helps little bit, but still problems: TINC interface is loosing IPV4 address silently after few hours:
mojtinc: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet6 fe80::9d64:576d:ec60:4735 prefixlen 64 scopeid 0x20
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 434278 bytes 502381178 (479.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 340636 bytes 105683246 (100.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[kjansik]

jessie with same configuration works like a charm..... stretch sucks.

[gmacario]

@kjansik I totally second your comments - I have tinc installed on two Raspberry Pi, the one on jessie works flawlessly while I am still debugging the one on stretch.

On the other hand Raspbian stretch packages tinc 1.0.31-1, while jessie is still at 1.0.24-2.1 - not sure if the problem is in the OS or in tinc...

Have you done any progress with tinc on Raspbian stretch since your last comments in mid January?

[fangfufu]

Does this bug still exist? I vaguely remember I seem to experienced similar thing whenever I start setting up tinc in new machine. I seem to occasionally end up deleting the systemd service file. I don't setup new tinc instances often, so I cannot confirm this bug personally right now.