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Yi Zhao ff74cc841a ifupdown: fix issue for configuring loopback interface
The patch inet-6-.defn-fix-inverted-checks-for-loopback.patch introduced
an issue that ifup/ifdown can not configure loopback interface:

$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

$ ifconfig -s
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0         1      0      0 0            74      0      0 0 BMRU
lo        65536 0         2      0      0 0             2      0      0 0 LRU
$ ifdown lo
$ ifconfig -s
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0         1      0      0 0            74      0      0 0 BMRU
lo        65536 0         2      0      0 0             2      0      0 0 LRU

The original patch is for 0.7.x and the change is not needed for 0.8.x.
Update the patch to make the ifup/ifdown can configure lo interface:
$ ifconfig -s
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0         0      0      0 0            77      0      0 0 BMRU
lo        65536 0         2      0      0 0             2      0      0 0 LRU
$ ifdown lo
$ ifconfig -s
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0         0      0      0 0            80      0      0 0 BMRU
$ ifup lo
$ ifconfig -s
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0         0      0      0 0            81      0      0 0 BMRU
lo        65536 0         2      0      0 0             2      0      0 0 LRU

(From OE-Core rev: f12c4f918048a7814505c5b931113ed8ab0115d9)

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2018-10-18 10:56:55 +01:00
2014-01-02 12:58:54 +00:00
2018-02-24 10:31:45 +00:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
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