Hello,
I'm trying the 'Extended Multicast' example from the book and the
two UMLs cannot ping each other. I'm afraid I'm missing something
but then, I'm doing exactly as per the book.
Host is Fedora Core 6, x86_64
kernel64-2.6.22.12-am1 umid=mc1 ubda=mc1,FedoraCore6-AMD64-root_fs
mem=128M
uml_mconsole mc1 config eth0=mcast
OK
uml1# dmesg
[...]
[42949411.190000] Configured mcast device: 239.192.168.1:1102-1
[42949411.190000] Choosing a random ethernet address for device eth0
[42949411.190000] Netdevice 0 (5e:11:b6:5c:17:b3) : mcast backend
multicast address: 239.192.168.1:1102, TTL:1
uml1# ifconfig eth0 192.168.1.1 up
eth0 Link encap:Ethernet HWaddr D6:8B:68:5F:06:2A
inet addr:192.168.1.1 Bcast:192.168.1.255
Mask:255.255.255.0 inet6 addr: fe80::d48b:68ff:fe5f:62a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
The the other UML:
host# kernel64-2.6.22.12-am1 umid=mc2
ubda=mc2,FedoraCore6-AMD64-root_fs mem=128M
host# uml_mconsole mc2 config eth0=mcast
OK
uml2# dmesg
[...]
[42949414.260000] Configured mcast device: 239.192.168.1:1102-1
[42949414.260000] Choosing a random ethernet address for device eth0
[42949414.260000] Netdevice 0 (ba:ca:65:7d:33:36) : mcast backend
multicast address: 239.192.168.1:1102, TTL:1
uml2# ifconfig eth0 192.168.1.2 up
eth0 Link encap:Ethernet HWaddr BA:DE:13:F6:55:73
inet addr:192.168.1.2 Bcast:192.168.1.255
Mask:255.255.255.0 inet6 addr: fe80::b8de:13ff:fef6:5573/64 Scope:Link
uml2# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
From 192.168.1.2 icmp_seq=2 Destination Host Unreachable
uml1#
PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data.
From 192.168.1.1 icmp_seq=1 Destination Host Unreachable
Note than no interface was created on the host. Should there be one ?
Host is Fedora Core 6, x86_54
I did not see in the book example that anything else should be
made in order for these two UMLs to be pingable between each
other. is there something missing ? Am I missing something ? Must the
host be configured in a certain way to allow these UML to see each
other without any host interface created ?
Thanks for any suggestion/comment.
Cheers,
Al
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