* User mode network cause other network doesn't work any more
@ 2011-09-02 13:59 Liang Guo
2011-09-02 14:42 ` Jan Kiszka
0 siblings, 1 reply; 4+ messages in thread
From: Liang Guo @ 2011-09-02 13:59 UTC (permalink / raw)
To: kvm
Hi,
When I run kvm with following option:
-net nic -net vde,sock=/var/run/vde2/vde3.ctl
the guest OS's network work as expected, I can ping/ssh from/to host OS,
but when I run kvm with:
-net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl
I can ping from/to host OS in guest OS, but when I try to ssh to host OS in
guest OS, I get 'connection reset' error.
Is this a bug or a expected behaviour ?
I have test qemu 0.14, kvm 0.14 and kvm 0.15, my host os is deban sid,
guest OS is Oracle Enterprise Linux or Debian sid.
Thanks and Regards,
--
Liang Guo
http://bluestone.cublog.cn
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: User mode network cause other network doesn't work any more 2011-09-02 13:59 User mode network cause other network doesn't work any more Liang Guo @ 2011-09-02 14:42 ` Jan Kiszka 2011-09-02 15:41 ` Liang Guo 0 siblings, 1 reply; 4+ messages in thread From: Jan Kiszka @ 2011-09-02 14:42 UTC (permalink / raw) To: Liang Guo; +Cc: kvm On 2011-09-02 15:59, Liang Guo wrote: > Hi, > > When I run kvm with following option: > > -net nic -net vde,sock=/var/run/vde2/vde3.ctl > > the guest OS's network work as expected, I can ping/ssh from/to host OS, > but when I run kvm with: > > -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl That's probably the classic mistake: You create one virtual LAN inside QEMU this way. Attached to this LAN are all four peers (two NICs, slirp and VDE). What you likely want are two backend/frontend pairs: -net nic,netdev=net1 -net user,id=net1 \ -net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2 Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: User mode network cause other network doesn't work any more 2011-09-02 14:42 ` Jan Kiszka @ 2011-09-02 15:41 ` Liang Guo 2011-09-02 15:42 ` Jan Kiszka 0 siblings, 1 reply; 4+ messages in thread From: Liang Guo @ 2011-09-02 15:41 UTC (permalink / raw) To: Jan Kiszka; +Cc: kvm On Fri, Sep 2, 2011 at 10:42 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote: > On 2011-09-02 15:59, Liang Guo wrote: >> Hi, >> >> When I run kvm with following option: >> >> -net nic -net vde,sock=/var/run/vde2/vde3.ctl >> >> the guest OS's network work as expected, I can ping/ssh from/to host OS, >> but when I run kvm with: >> >> -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl > > That's probably the classic mistake: You create one virtual LAN inside > QEMU this way. Attached to this LAN are all four peers (two NICs, slirp > and VDE). Thank you pointing this out, I thought '-net nic' and '-net user|tap|vd' was connected with their sequence. > > What you likely want are two backend/frontend pairs: > -net nic,netdev=net1 -net user,id=net1 \ > -net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2 > > Jan I can reach my object with -netdev user,id=eth0 -device virtio-net-pci,netdev=eth0 \ -netdev vde,sock=/var/run/vde2/vde3.ctl,id=eth1 -device virtio-net-pci,netdev=eth1 or -net nic,vlan=1 -net user,vlan=1 \ -net nic,vlan=2 -net vde,sock=/var/run/vde2/vde3.ctl,vlan=2 Thanks, -- Liang Guo http://bluestone.cublog.cn ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: User mode network cause other network doesn't work any more 2011-09-02 15:41 ` Liang Guo @ 2011-09-02 15:42 ` Jan Kiszka 0 siblings, 0 replies; 4+ messages in thread From: Jan Kiszka @ 2011-09-02 15:42 UTC (permalink / raw) To: Liang Guo; +Cc: kvm@vger.kernel.org On 2011-09-02 17:41, Liang Guo wrote: > On Fri, Sep 2, 2011 at 10:42 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote: >> On 2011-09-02 15:59, Liang Guo wrote: >>> Hi, >>> >>> When I run kvm with following option: >>> >>> -net nic -net vde,sock=/var/run/vde2/vde3.ctl >>> >>> the guest OS's network work as expected, I can ping/ssh from/to host OS, >>> but when I run kvm with: >>> >>> -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl >> >> That's probably the classic mistake: You create one virtual LAN inside >> QEMU this way. Attached to this LAN are all four peers (two NICs, slirp >> and VDE). > Thank you pointing this out, I thought '-net nic' and '-net user|tap|vd' was > connected with their sequence. > >> >> What you likely want are two backend/frontend pairs: >> -net nic,netdev=net1 -net user,id=net1 \ >> -net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2 >> >> Jan > I can reach my object with > > -netdev user,id=eth0 -device virtio-net-pci,netdev=eth0 \ > -netdev vde,sock=/var/run/vde2/vde3.ctl,id=eth1 -device > virtio-net-pci,netdev=eth1 > > or > > -net nic,vlan=1 -net user,vlan=1 \ > -net nic,vlan=2 -net vde,sock=/var/run/vde2/vde3.ctl,vlan=2 Err, yeah, I also confused the syntax. :) Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-09-02 15:42 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2011-09-02 13:59 User mode network cause other network doesn't work any more Liang Guo 2011-09-02 14:42 ` Jan Kiszka 2011-09-02 15:41 ` Liang Guo 2011-09-02 15:42 ` Jan Kiszka
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