[Bug 806284] Re: nfs-kernel-server fails: hostname "has non-inet addr" on boot, before eth0 comes up

[Daniel Moyne]

since installation of Ubuntu 20.04.3 LTS (Focal Fossa)20.04 nfs
connection between client and server on my home lan is no more possible
; I removed autofs and firewall before using direct mount command on
client with no success though the export check on server shows
authorization ; everything has been done following the rules for client
and server ; need help to recover proper access

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Title:
  nfs-kernel-server fails: hostname "has non-inet addr" on boot, before
  eth0 comes up

Status in nfs-utils package in Ubuntu:
  Triaged

Bug description:
  I upgraded my server to Natty and now the two directories that this
  server exports to various other machines on the network, do not get
  exported during an ordinary bootup.  However, after startup, if I run
  "exportfs -av" on them, they export just fine.

  /var/log/syslog shows:

    Jul  5 16:17:54 om exportfs[1585]: name1.frob.com has non-inet addr

    Jul  5 16:17:54 om exportfs[1585]: last message repeated 3 times

    Jul  5 16:17:54 om exportfs[1585]: name2.frob.com has non-inet addr

    Jul  5 16:17:54 om exportfs[1585]: name2.frob.com has non-inet addr

  (I've replaced the actual names with name1.frob.com and
  name2.frob.com).

  The problem appears to occur because NetworkManager is still in the
  process of bringing up the network interface (according to other
  interleaved syslog reports).  These hostnames need DNS from another
  server to resolve them.

  The root cause of the problem appears to be that Natty doesn't make
  the nfs-kernel-server service wait until the first Ethernet comes up.
  Thus, nfs-kernel-service can't resolve domain names in the
  /etc/exports file, and it produces this very confusing message and
  doesn't actually export the filesystems.

  Ubuntu release:  11.04 (natty)
  Version of nfs-utils: Installed: 1:1.2.2-4ubuntu5

  Related programs: upstart, NetworkManager

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