I created a Yocto image on a target which has the loopback and a eth0 network interfaces.
When I configure the /etc/network/interface with static IP the network down command works. After the command ifdown -a the ifconfig returns nothing.
My /etc/network/interface in static mode:
# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
# The loopback interface
auto lo
iface lo inet loopback
# Main wired interface
auto eth0
iface eth0 inet static
address 192.168.1.10
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 192.168.1.1
My problem comes if I configure the eth0 in DHCP mode:
# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
# The loopback interface
auto lo
iface lo inet loopback
# Main wired interface
auto eth0
iface eth0 inet dhcp
After a ifup -a command, ifconfig return that:
eth0 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
inet addr:192.168.1.133 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: <ipv6 address> Scope:Link
inet6 addr: <ipv6 address> Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:553 errors:0 dropped:106 overruns:0 frame:0
TX packets:98 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:70121 (68.4 KiB) TX bytes:11022 (10.7 KiB)
Interrupt:33
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:140 (140.0 B) TX bytes:140 (140.0 B)
However, After a ifdown -a -v
run-parts /etc/network/if-down.d
ifconfig lo 127.0.0.1 down
run-parts /etc/network/if-post-down.d
run-parts /etc/network/if-down.d
kill `cat /var/run/udhcpc.eth0.pid` 2>/dev/null
ifconfig eth0 down
run-parts /etc/network/if-post-down.d
ifconfig returns the following:
eth0 Link encap:Ethernet HWaddr fc:c2:3d:0d:bb:93
inet6 addr: fe80::fec2:3dff:fe0d:bb93/64 Scope:Link
inet6 addr: 2a02:1205:c69a:b970:fec2:3dff:fe0d:bb93/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1304 errors:0 dropped:272 overruns:0 frame:0
TX packets:158 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:148500 (145.0 KiB) TX bytes:16490 (16.1 KiB)
Interrupt:33
The eth0 interface isn't cleaned completely and this is a problem for me since I use its status to manage others things in my system.
I precise I use the package resolvconf which add a ifdown script (not used in case of DHCP)
cat /etc/network/if-down.d/resolvconf:
#!/bin/sh
#
# ifdown hook script for resolvconf
#
# This file is part of the resolvconf package.
#
[ -x /sbin/resolvconf ] || exit 0
case "$ADDRFAM" in
inet|inet6) : ;;
*) exit 0 ;;
esac
/sbin/resolvconf -d "${IFACE}.${ADDRFAM}" || :
Have you an idea about what is going wrong ?
