Re: [Qemu-devel] [Bug 1469946] Re: guest can't get IP when create guest with bridge.

[Fam Zheng]

On Wed, 07/01 06:36, chao zhou wrote:
> after try the patch
> http://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg07377.html with
> qemu.git commit(d2966f804d70a244f5dde395fc5d22a50ed3e74e) the guest can get
> IP, but after save/retore or live migration, the guest is alive, but ping or
> ssh  guest's IP fail .

Another fix is needed to handle stop/resume. I'm sending it now with you in the
Cc list. Please test!

Thanks,
Fam

> 
> -- 
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> https://bugs.launchpad.net/bugs/1469946
> 
> Title:
>   guest can't get IP when create guest with bridge.
> 
> Status in QEMU:
>   New
> 
> Bug description:
>   Environment:
>   ------------
>   Host OS (ia32/ia32e/IA64):ia32e
>   Guest OS (ia32/ia32e/IA64):ia32e
>   Guest OS Type (Linux/Windows):linux
>   kvm.git Commit:aefbef10e3ae6e2c6e3c54f906f10b34c73a2c66
>   qemu.git Commit:dc1e1350f8061021df765b396295329797d66933
>   Host Kernel Version:4.1.0
>   Hardware:Ivytown_EP, Haswell_EP
> 
>   
>   Bug detailed description:
>   --------------------------
>   when create guest with bridge, the guest can not get ip.
> 
>   note:
>   1. fail rate: 3/5
>   2. this is a qemu bug:
>   kvm      + qemu   =  result
>   aefbef10 + dc1e1350    =  bad 
>   aefbef10 + a4ef02fd   =  good
> 
>   Reproduce steps:
>   ----------------
>   1. create guest:
>   qemu-system-x86_64 -enable-kvm -m 2G -smp 4 -device 
> virtio-net-pci,netdev=net0,mac=$random_mac -netdev 
> tap,id=net0,script=/etc/kvm/qemu-ifup rhel6u5.qcow
> 
>   Current result:
>   ----------------
>   guest can't get IP
> 
>   Expected result:
>   ----------------
>   guest can get ip
> 
>   Basic root-causing log:
>   ----------------------
> 
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