@Julian - As no one seems to be doing that, I'll take the initiative and
give you the information instead.
(1) add -vv to networkd_dispatcher_args= in /etc/default/networkd-dispatcher
and restart it?
(2) include the output of networkctl list
Output of networkctl list:
$ networkctl list
IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 eth0 ether routable configured
3 eth1 ether routable configured
4 docker0 ether no-carrier unmanaged
4 links listed.
All log items surrounding the incident with -vv enabled:
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'):
dbus.String('no-carrier', variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: WARNING:Unknown
index 70 seen, reloading interface list
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Performed
interface scan; state: <Dispatcher({'iface_names_by_idx': {1: 'lo', 2: 'eth0',
3: 'eth1', 4: 'docker0', 69: 'veth3a1259f', 70: 'vethb90b319'},
'ifaces_by_name': {'lo': NetworkctlListState(idx=1, name='lo', type='loopback',
operational='carrier', administrative='unmanaged'), 'eth0':
NetworkctlListState(idx=2, name='eth0', type='ether', operational='routable',
administrative='configured'), 'eth1': NetworkctlListState(idx=3, name='eth1',
type='ether', operational='routable', administrative='configured'), 'docker0':
NetworkctlListState(idx=4, name='docker0', type='ether',
operational='no-carrier', administrative='unmanaged'), 'veth3a1259f':
NetworkctlListState(idx=69, name='veth3a1259f', type='ether',
operational='off', administrative='unmanaged'), 'vethb90b319':
NetworkctlListState(idx=70, name='vethb90b319', type='ether',
operational='no-carrier', administrative='unmanaged')}, 'script_dir':
'/etc/networkd-dispatcher:/usr/lib/networkd-dispatcher'})>
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:No change
represented by operational state 'no-carrier' for interface 'vethb90b319'
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('AdministrativeState'):
dbus.String('unmanaged', variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_369')
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:No change
represented by administrative state 'unmanaged' for interface 'veth3a1259f'
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('AdministrativeState'):
dbus.String('unmanaged', variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:04 lb-plentiful-reservoir networkd-dispatcher: DEBUG:No change
represented by administrative state 'unmanaged' for interface 'vethb90b319'
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('AdministrativeState'): dbus.String('linger',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_369')
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Path
'/etc/networkd-dispatcher/linger.d' does not exist; skipping
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Path
'/usr/lib/networkd-dispatcher/linger.d' does not exist; skipping
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=69, name='veth3a1259f',
type='ether', operational='off', administrative='linger') entering state
'linger': no triggers
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'): dbus.String('carrier',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignored state
'carrier' seen for interface 'vethb90b319', skipping
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'): dbus.String('routable',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_34')
Jan 09 19:10:05 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=4, name='docker0',
type='ether', operational='routable', administrative='unmanaged') entering
state 'routable': no triggers
Jan 09 19:10:06 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'): dbus.String('degraded',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:06 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignored state
'degraded' seen for interface 'vethb90b319', skipping
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'):
dbus.String('no-carrier', variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=70, name='vethb90b319',
type='ether', operational='no-carrier', administrative='unmanaged') entering
state 'no-carrier': no triggers
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'): dbus.String('off',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=70, name='vethb90b319',
type='ether', operational='off', administrative='unmanaged') entering state
'off': no triggers
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('AdministrativeState'): dbus.String('linger',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_369')
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: WARNING:Unknown
index 69 seen, reloading interface list
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Performed
interface scan; state: <Dispatcher({'iface_names_by_idx': {1: 'lo', 2: 'eth0',
3: 'eth1', 4: 'docker0', 70: 'vethb90b319'}, 'ifaces_by_name': {'lo':
NetworkctlListState(idx=1, name='lo', type='loopback', operational='carrier',
administrative='unmanaged'), 'eth0': NetworkctlListState(idx=2, name='eth0',
type='ether', operational='routable', administrative='configured'), 'eth1':
NetworkctlListState(idx=3, name='eth1', type='ether', operational='routable',
administrative='configured'), 'docker0': NetworkctlListState(idx=4,
name='docker0', type='ether', operational='routable',
administrative='unmanaged'), 'vethb90b319': NetworkctlListState(idx=70,
name='vethb90b319', type='ether', operational='off',
administrative='unmanaged')}, 'script_dir':
'/etc/networkd-dispatcher:/usr/lib/networkd-dispatcher'})>
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: ERROR:Unknown
interface index 69 seen even after reload
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('AdministrativeState'): dbus.String('linger',
variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_370')
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Path
'/etc/networkd-dispatcher/linger.d' does not exist; skipping
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Path
'/usr/lib/networkd-dispatcher/linger.d' does not exist; skipping
Jan 09 19:10:11 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=70, name='vethb90b319',
type='ether', operational='off', administrative='linger') entering state
'linger': no triggers
Jan 09 19:10:12 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Signal:
typ=dbus.String('org.freedesktop.network1.Link'),
data=dbus.Dictionary({dbus.String('OperationalState'):
dbus.String('no-carrier', variant_level=1)}, signature=dbus.Signature('sv')),
path=dbus.ObjectPath('/org/freedesktop/network1/link/_34')
Jan 09 19:10:12 lb-plentiful-reservoir networkd-dispatcher: DEBUG:Ignoring
notification for interface NetworkctlListState(idx=4, name='docker0',
type='ether', operational='no-carrier', administrative='unmanaged') entering
state 'no-carrier': no triggers
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1775131
Title:
Ubuntu 18.04 networking issue (connection drops after approx. 15
minutes)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/networkd-dispatcher/+bug/1775131/+subscriptions
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