Public bug reported:
recently i have upgraded 4 VM-based systems to 16.04.1 LTS (Xenial
Xerus). on startup, settings within /etc/network/interfaces do not
appear to be taking effect reliably. specifically, the gateway and dns-
settings have been problematic for me. on subsequent restarts, all or
some of the settings take effect other times the gateway is set and the
dns- options are not set. very problematic when the default gateway is
not added to the routing table.
the dns- settings were a bit easier to illustrate the issue. i added a
comment to /etc/resolvconf/resolv.conf.d/base (# base) &
etc/resolvconf/resolv.conf.d/tail (# tail).
$ cat /etc/resolvconf/resolv.conf.d/*
# base
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# tail
on startup on 1 of the systems showed this:
$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# tail
you can see the "# base" comment wasn't added.
let me know if i can add anymore details or if this should be posted somewhere
else.
$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
$ apt-cache policy ifupdown
ifupdown:
Installed: 0.8.10ubuntu1.1
Candidate: 0.8.10ubuntu1.1
Version table:
*** 0.8.10ubuntu1.1 500
500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
100 /var/lib/dpkg/status
0.8.10ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
$ apt-cache policy resolvconf
resolvconf:
Installed: 1.78ubuntu2
Candidate: 1.78ubuntu2
Version table:
*** 1.78ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
500 http://us.archive.ubuntu.com/ubuntu xenial/main i386 Packages
100 /var/lib/dpkg/status
** Affects: ifupdown (Ubuntu)
Importance: Undecided
Status: New
** Affects: resolvconf (Ubuntu)
Importance: Undecided
Status: New
** Also affects: resolvconf (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1628552
Title:
on startup gateway & dns- options in /etc/network/interfaces are not
always set
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