[Pkg-utopia-maintainers] Bug#815933: network-manager: DHCP no longer works when different interface exists in /e/n/i

[Matt Zagrabelny]

Package: network-manager
Version: 1.1.90-6
Severity: normal


Dear Maintainer,

I am trying to let NM manage my hardwired interface and let /e/n/i manage my
wifi. Backwords. I know.

Both the wifi and hard-wired interfaces work with NM.

The changes I made to have /etc/network/interfaces manage the wifi is:

1. Add the following stanza to /etc/NetworkManager/NetworkManager.conf:

[keyfile]
unmanaged-devices=mac:74:da:38:41:26:d1

2. Add the following stanza to /etc/network/interfaces:

allow-hotplug enx74da384126d1
iface enx74da384126d1 inet static
    address 172.20.20.0
    netmask 255.255.255.0

The results are:

1. The enx74da384126d1 (wifi) interface is no longer in the NM UI. Which is
expected.

2. Also, the enx74da384126d1 (wifi) is configured with the L3 address. Which is
expected.

The NM UI shows the hard-wired interface never becoming configured. Here are
the logs:

Feb 13 18:06:03 zergling NetworkManager[357]: <info>  (enxb827eba59dfb):
device state change: ip-config -> failed (reason 'ip-config-unavailable') [70
120 5]
Feb 13 18:06:03 zergling NetworkManager[357]: <info>  Disabling autoconnect
for connection 'Wired connection 1'.
Feb 13 18:06:03 zergling NetworkManager[357]: <warn>  (enxb827eba59dfb):
Activation: failed for connection 'Wired connection 1'
Feb 13 18:06:03 zergling NetworkManager[357]: <info>  (enxb827eba59dfb):
device state change: failed -> disconnected (reason 'none') [120 30 0]
Feb 13 18:06:03 zergling avahi-daemon[330]: Withdrawing address record for
fe80::ba27:ebff:fea5:9dfb on enxb827eba59dfb.
Feb 13 18:06:03 zergling avahi-daemon[330]: Leaving mDNS multicast group on
interface enxb827eba59dfb.IPv6 with address fe80::ba27:ebff:fea5:9dfb.
Feb 13 18:06:03 zergling avahi-daemon[330]: Interface enxb827eba59dfb.IPv6 no
longer relevant for mDNS.

I did perform a tcpdump on the DHCP server and never saw packets come in from
the system in question.

Thanks for the help!

-m

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.4.0-trunk-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages network-manager depends on:
ii  adduser                3.113+nmu3
ii  dbus                   1.10.6-1
ii  init-system-helpers    1.28
ii  isc-dhcp-client        4.3.3-8
ii  libbluetooth3          5.36-1
ii  libc6                  2.21-9
ii  libglib2.0-0           2.46.2-3
ii  libgnutls30            3.4.9-2
ii  libgudev-1.0-0         230-2
ii  libmm-glib0            1.4.12-1
ii  libndp0                1.4-2
ii  libnewt0.52            0.52.18-2
ii  libnl-3-200            3.2.27-1
ii  libnm0                 1.1.90-6
ii  libpam-systemd         229-1
ii  libpolkit-agent-1-0    0.105-14.1
ii  libpolkit-gobject-1-0  0.105-14.1
ii  libreadline6           6.3-8+b4
ii  libsoup2.4-1           2.52.2-1
ii  libsystemd0            229-1
ii  libteamdctl0           1.23-1
ii  libuuid1               2.27.1-3
ii  lsb-base               9.20160110
ii  policykit-1            0.105-14.1
ii  udev                   229-1
ii  wpasupplicant          2.3-2.3

Versions of packages network-manager recommends:
ii  crda            3.13-1+b1
ii  dnsmasq-base    2.75-1
ii  iptables        1.6.0-2
ii  iputils-arping  3:20121221-5+b2
ii  modemmanager    1.4.12-1
ii  ppp             2.4.7-1+2

Versions of packages network-manager suggests:
pn  libteam-utils  <none>

-- Configuration Files:
/etc/NetworkManager/NetworkManager.conf changed:
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[keyfile]
unmanaged-devices=mac:74:da:38:41:26:d1


-- no debconf information