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Re: [Qemu-devel] usermode-networking problem


From: Fabrice Bellard
Subject: Re: [Qemu-devel] usermode-networking problem
Date: Sun, 23 May 2004 23:05:56 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624

Hi,

ping is _not_ supported reliably in user mode network except to ping the local router.

Fabrice.

Adrian Smarzewski wrote:
Hi,

QEmu 2.5.5 with usermode-networking compiled and turned on.
Internet connection on host system (linux 2.6) works.
on guest system (linux-test):


sh-2.05b# ping -c 3 10.0.2.2
PING 10.0.2.2 (10.0.2.2) 56(84) bytes of data.
64 bytes from 10.0.2.2: icmp_seq=1 ttl=255 time=3.16 ms
64 bytes from 10.0.2.2: icmp_seq=2 ttl=255 time=0.390 ms
64 bytes from 10.0.2.2: icmp_seq=3 ttl=255 time=0.333 ms

sh-2.05b# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
10.0.0.0 * 255.0.0.0 U 0 0 0 eth0 default 10.0.2.2 0.0.0.0 UG 0 0 0 eth0

sh-2.05b# ping -c 3 212.77.100.101
PING 212.77.100.101 (212.77.100.101) 56(84) bytes of data.

--- 212.77.100.101 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2018ms


I don't know why. Should I configure something on host os?








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