[Bug 1831470] Re: systemd dhcp don't work on vlan

[Roman]

make it through crontab and redirect output

root at gwd:~# cat /root/networkctl
IDX LINK             TYPE               OPERATIONAL SETUP
  1 lo               loopback           carrier     unmanaged
  2 enp2s0           ether              carrier     configured
  3 enp3s0           ether              degraded    configured
  4 wg0              none               routable    configured
  5 br-mgmt          ether              routable    configured
  6 br-lan           ether              no-carrier  configuring
  7 enp3s0.2         ether              degraded    configuring

7 links listed.

root at gwd:~# cat /root/journal-systemd
-- Logs begin at Sun 2018-01-28 18:58:18 MSK, end at Tue 2019-06-04 16:06:01 MSK. --
Jun 04 16:02:15 gwd systemd[1]: Starting Network Service...
Jun 04 16:02:15 gwd systemd-networkd[635]: br-lan: netdev ready
Jun 04 16:02:15 gwd systemd-networkd[635]: br-mgmt: netdev ready
Jun 04 16:02:15 gwd systemd-networkd[635]: wg0: netdev ready
Jun 04 16:02:15 gwd systemd-networkd[635]: Enumeration completed
Jun 04 16:02:15 gwd systemd[1]: Started Network Service.
Jun 04 16:02:15 gwd systemd-networkd[635]: enp2s0: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: br-mgmt: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: lo: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: br-lan: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: wg0: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: br-mgmt: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: lo: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: br-lan: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: wg0: Link is not managed by us
Jun 04 16:02:15 gwd systemd-networkd[635]: enp3s0.2: netdev ready
Jun 04 16:02:15 gwd systemd-networkd[635]: enp3s0: IPv6 successfully enabled
Jun 04 16:02:15 gwd systemd-networkd[635]: enp2s0: IPv6 successfully disabled
Jun 04 16:02:18 gwd systemd-networkd[635]: enp3s0: Gained carrier
Jun 04 16:02:18 gwd systemd-networkd[635]: enp3s0.2: Gained carrier
Jun 04 16:02:18 gwd systemd-networkd[635]: br-lan: IPv6 successfully enabled
Jun 04 16:02:18 gwd systemd-networkd[635]: br-mgmt: IPv6 successfully enabled
Jun 04 16:02:18 gwd systemd-networkd[635]: wg0: IPv6 successfully disabled
Jun 04 16:02:18 gwd systemd-networkd[635]: wg0: Gained carrier
Jun 04 16:02:18 gwd systemd-networkd[635]: wg0: Configured
Jun 04 16:02:18 gwd systemd-networkd[635]: lo: Link is not managed by us
Jun 04 16:02:19 gwd systemd-networkd[635]: enp2s0: Gained carrier
Jun 04 16:02:19 gwd systemd-networkd[635]: enp2s0: Configured
Jun 04 16:02:19 gwd systemd-networkd[635]: br-mgmt: Gained carrier
Jun 04 16:02:20 gwd systemd-networkd[635]: enp3s0: Gained IPv6LL
Jun 04 16:02:20 gwd systemd-networkd[635]: enp3s0: Configured
Jun 04 16:02:20 gwd systemd-networkd[635]: enp3s0.2: Gained IPv6LL
Jun 04 16:02:20 gwd systemd-networkd[635]: br-mgmt: Gained IPv6LL
Jun 04 16:02:20 gwd systemd-networkd[635]: br-mgmt: Configured

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https://bugs.launchpad.net/bugs/1831470

Title:
  systemd dhcp don't work on vlan

Status in systemd package in Ubuntu:
  New

Bug description:
  root at gwd:~# uname -a
  Linux gwd 4.15.0-50-generic #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

  root at gwd:~# lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 18.04.2 LTS
  Release:        18.04
  Codename:       bionic

  root at gwd:~# cat /etc/systemd/network/enp3s0.network
  [Match]
  Name=enp3s0

  [Link]
  MACAddress=C8:D3:A3:50:02:33

  [Network]
  VLAN=enp3s0.2

  root at gwd:~# cat /etc/systemd/network/enp3s0.2.netdev
  [NetDev]
  Name=enp3s0.2
  Kind=vlan

  [VLAN]
  Id=2

  root at gwd:~# cat /etc/systemd/network/enp3s0.2.network
  [Match]
  Name=enp3s0.2

  [Network]
  DHCP=ipv4

  [DHCP]
  UseRoutes=true

  -----------------------------
  No ip on enp3s0.2 after boot!
  dhclient enp3s0.2 works fine, i create systemd service for it as temporary workaround

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