[pkg-lxc-devel] Bug#993232: lxc: Cannot add ipv4 gateway for network device "eth0" when not bringing up the interface.

[John]

Package: lxc
Version: 1:4.0.10-1
Severity: normal
X-Debbugs-Cc: johnw at wonghome.net

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

	After upgraded lxc from 4.0.6-2 to 4.0.10-1. lxc container cannot start.
	I find the error with "lxc-start -l trace" like below: 

	network.c:lxc_network_setup_in_child_namespaces_common:3894 - Cannot add ipv4 gateway for network device "eth0" when not bringing up the interface
	network.c:lxc_setup_network_in_child_namespaces:4038 - Function not implemented - Failed to setup netdev
	conf.c:lxc_setup:4080 - Failed to setup network
	start.c:do_start:1291 - Failed to setup container "vbox"

	If I rollback to 4.0.6-2, everything work fine as before.
	If I remove the line "lxc.net.0.ipv4.gateway = 10.0.3.1" in "/var/lib/lxc/vbox/config" (container config),
	the container can start again, but result no network , only loopback interface (lo) in container (no eth0 in container).

	Thanks. 

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-8-cloud-amd64 (SMP w/2 CPU threads)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages lxc depends on:
ii  bridge-utils                 1.7-1
ii  debconf [debconf-2.0]        1.5.77
ii  dnsmasq-base [dnsmasq-base]  2.85-1
ii  iproute2                     5.13.0-2
ii  iptables                     1.8.7-1
ii  libc6                        2.31-17
ii  libcap2                      1:2.44-1
ii  libgcc-s1                    11.2.0-3
ii  liblxc1                      1:4.0.10-1
ii  libseccomp2                  2.5.1-1
ii  libselinux1                  3.1-3
ii  lsb-base                     11.1.0

Versions of packages lxc recommends:
ii  apparmor       2.13.6-10
pn  debootstrap    <none>
pn  dirmngr        <none>
pn  gnupg          <none>
pn  libpam-cgfs    <none>
pn  lxc-templates  <none>
ii  lxcfs          4.0.7-1
ii  openssl        1.1.1l-1
pn  rsync          <none>
pn  uidmap         <none>
ii  wget           1.21-1+b1

Versions of packages lxc suggests:
pn  btrfs-progs  <none>
pn  lvm2         <none>
pn  python3-lxc  <none>

-- Configuration Files:
/etc/default/lxc-net changed:
USE_LXC_BRIDGE="true"
LXC_BRIDGE="lxcbr0"
LXC_ADDR="10.0.3.1"
LXC_NETMASK="255.255.255.0"
LXC_NETWORK="10.0.3.0/24"
LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
LXC_DHCP_MAX="253"
LXC_DHCP_CONFILE=""
LXC_DOMAIN=""


-- debconf information:
  lxc/auto_update_config: