Hello,
I am experiencing some odd behavior. I have a host and guest running
2.6.17.8. I can ping the UML guest from the host (and vice versa),
but the UML guest can not ping itself.
On the host I have a predefined tap interface:
tap0 Link encap:Ethernet HWaddr C6:35:F3:11:66:F8
inet addr:192.168.42.1 Bcast:192.168.42.3 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
I run UML using tap0:
linux ubda=FedoraCore5-x86-root_fs root=/dev/ubda eth0=tuntap,tap0
And it starts up and has a eth0 with the following information:
[EMAIL PROTECTED] ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr FE:FD:C0:A8:2A:02
inet addr:192.168.42.2 Bcast:192.168.42.3 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:5
I can ping the host from the guest:
[EMAIL PROTECTED] ~]# ping -c 1 192.168.42.1
PING 192.168.42.1 (192.168.42.1) 56(84) bytes of data.
64 bytes from 192.168.42.1: icmp_seq=1 ttl=64 time=22.7 ms
--- 192.168.42.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 22.760/22.760/22.760/0.000 ms
And conversely the guest from the host:
[EMAIL PROTECTED] ~]$ ping -c 1 192.168.42.2
PING 192.168.42.2 (192.168.42.2) 56(84) bytes of data.
64 bytes from 192.168.42.2: icmp_seq=0 ttl=64 time=2.92 ms
--- 192.168.42.2 ping statistics ---1 packets transmitted, 1 received,
0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.925/2.925/2.925/0.000 ms, pipe 2
However the guest can't ping itself:
[EMAIL PROTECTED] ~]# ping -c 1 192.168.42.2
PING 192.168.42.2 (192.168.42.2) 56(84) bytes of data.
--- 192.168.42.2 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
Any suggestions?
Thanks,
Charles
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