[Xen-users] Re: GPLPV on opensolaris, another try

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

On Sat, Feb 7, 2009 at 5:09 AM, James Harper
<james.harper@xxxxxxxxxxxxxxxx> wrote:
> Can you try disabling all offloads in Windows (checksum and large send)?

No effect. Same thing happens.

>
> Also try running wireshark or another traffic capture routine and see
> what that picks up. It could be getting corrupt packets or no packets at
> all.
>
> There could maybe be something wrong with broadcast packets... try
> adding an arp entry manually in Dom0 for DomU and then try pinging it.
>

After adding static arp, wireshark on domU shows it sends ICMP echo
packets but doesn't receive anything (not even corrupted packets).
tcpdump on dom0 shows something interesting though.

05:58:02.333904 IP (tos 0x0, ttl 128, id 41, offset 0, flags [none],
proto: ICMP (1), length: 60) 192.168.129.99 > 192.168.129.89: ICMP
echo request, id 512, seq 1280, length 40
05:58:02.334044 IP (tos 0x0, ttl 255, id 64313, offset 0, flags [DF],
proto: ICMP (1), length: 60) 192.168.129.89 > 192.168.129.99: ICMP
echo reply, id 512, seq 1280, length 40

the ICMP reply (which domU never got) has [DF] flag. Is this normal?
Is this MTU-related issue?

Regards,

Fajar

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