Re: [Qemu-devel] usermode-networking problem

[Carlos Valiente]

On Sun, 2004-05-23 at 19:58, Adrian Smarzewski wrote:
> 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?

Yes: On your host you have to:

1. Enable IP forwarding:

# echo 1 > /proc/sys/net/ipv4/ip_forward

2. Enable masquerading

# iptables -t nat -A POSTROUTING        \
        -s 10.0.0.0/8                   \
        -d ! 10.0.0.0/8 -j MASQUERADE

C