other: 0.758
network: 0.681
permissions: 0.674
PID: 0.665
device: 0.663
socket: 0.659
debug: 0.655
vnc: 0.628
semantic: 0.622
performance: 0.590
graphic: 0.580
KVM: 0.543
boot: 0.535
files: 0.535

Network issue above 2.5.1.1

Hi,
WHen running a QEMU guest (Windows7) on a linux x86-64 server, the network stops working after some time for any version above 2.5.1.1

In 2.5.1.1, all is fine (no issue with network)
Any version ablve (trying 2.10.1 now), the application in windows stops accessing the internet after a while

THis is my starting line:
/usr/bin/qemu-system-x86_64 -machine pc-i440fx-1.7,accel=kvm -usb -usbdevice tablet -usbdevice keyboard -enable-kvm -cpu core2duo -smp 2 -drive file=winpro.qcow,index=0,media=disk,format=qco
w2 -m 4096 -vga vmware -vnc :3 -k en-us -device e1000,netdev=nic1 -netdev user,id=nic1,smb=/data/vps/files/,hostfwd=tcp::10053-:10053,hostfwd=tcp::3387-:3389 -rtc base=utc,clock=host -daemon
ize

Thisis my configure line:
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --enable-kvm --disable-gtk --disable-xen --disable-user --enable-vnc-sasl --disable-libusb --disable-debug-info --disable-spi
ce --enable-lzo --enable-pie --disable-werror --enable-linux-aio --enable-vhost-net --disable-tcmalloc --enable-vde --enable-nettle --disable-smartcard --enable-curl

On Sat, Oct 07, 2017 at 12:09:25PM -0000, Joan Moreau via Qemu-devel wrote:
> WHen running a QEMU guest (Windows7) on a linux x86-64 server, the network stops working after some time for any version above 2.5.1.1
> 
> In 2.5.1.1, all is fine (no issue with network)
> Any version ablve (trying 2.10.1 now), the application in windows stops accessing the internet after a while
> 
> THis is my starting line:
> /usr/bin/qemu-system-x86_64 -machine pc-i440fx-1.7,accel=kvm -usb -usbdevice tablet -usbdevice keyboard -enable-kvm -cpu core2duo -smp 2 -drive file=winpro.qcow,index=0,media=disk,format=qco
> w2 -m 4096 -vga vmware -vnc :3 -k en-us -device e1000,netdev=nic1 -netdev user,id=nic1,smb=/data/vps/files/,hostfwd=tcp::10053-:10053,hostfwd=tcp::3387-:3389 -rtc base=utc,clock=host -daemon
> ize
> 
> Thisis my configure line:
> ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --enable-kvm --disable-gtk --disable-xen --disable-user --enable-vnc-sasl --disable-libusb --disable-debug-info --disable-spi
> ce --enable-lzo --enable-pie --disable-werror --enable-linux-aio --enable-vhost-net --disable-tcmalloc --enable-vde --enable-nettle --disable-smartcard --enable-curl

Does tcpdump on the host show outgoing connections to an external IP
address (not a domain name)?  For example, try opening to
http://172.99.69.163/ from inside the guest and check that there is a
TCP SYN packet sent from the host to 172.99.69.163.

Do the hostfwd ports still work while internet access is down?

Stefan


[Expired for QEMU because there has been no activity for 60 days.]