On Mon, Aug 15, 2011 at 11:12:26PM +0200, Mark Schneider wrote:
Tested and *nonworking* working OSes (no IP address):
- CentOS 6.0
Pings from *centos-hvm* to dom0 interface*no ip-traffic on peth0*
This is just like it should be. When you ping dom0 packets obviously should not
go out.
root@xen411dom0:/ftp/HVM# tcpdump -i eth0 'icmp[icmptype] = icmp-echo and
icmp[icmptype] != icmp-echoreply'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
19:45:30.283679 IP 192.168.1.180> 192.168.1.124: ICMP echo request, id
61445, seq 23, length 64
19:45:31.285560 IP 192.168.1.180> 192.168.1.124: ICMP echo request, id
61445, seq 24, length 64
And here on the bridge you see traffic, so that's ok.
Pings from *centos-hvm* to default gateway *no ip-traffic on peth0*
So here's your problem. Your bridge in dom0 is NOT forwarding the packets out
to peth0..
root@xen411dom0:/ftp/HVM# tcpdump -i eth0 'icmp[icmptype] = icmp-echo and
icmp[icmptype] != icmp-echoreply'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
19:54:00.770442 IP 192.168.1.180> 192.168.1.1: ICMP echo request, id 518,
seq 23, length 64
19:54:01.770958 IP 192.168.1.180> 192.168.1.1: ICMP echo request, id 518,
seq 24, length 64
So where are these packets going to ? They're not getting out of dom0..
Do you have a firewall rule in dom0 that drops them?
Try these:
- In the HVM guest: run "arp -an" and check what MAC address you see for the
gateway-IP.
- In dom0: run "brctl showmacs eth0" and verify which port has the MAC of the
gateway.
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