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Ticket Resolution Summary Owner Reporter
#1247 fixed ping doesn't work with NAT network interfaces Bart
Description

Run a Windows XP guest on a Linux host, and configure the network interface as NAT. In the guest, run a ping command to a live host.

Expected: Windows guest reports that the host is alive.

Actual result: Windows guest reports that the request timed out.

Technical background: VirtualBox NAT translates the outgoing ICMP request in an UDP echo request (port 7). If the echo service is not enabled on this host (which is e.g. the case on OpenSolaris servers), that host will send back an ICMP error (destination unreachable). VirtualBox does not translate this ICMP error into an ICMP response for the guest. This can be easily verified by running Wireshark simultaneously on the guest OS and on the host OS.

#1248 invalid CPUID doesn't expose "SYSENTER/SYSEXIT" in spite of supporting it nurnware
Description

Hi,

the CPUID-instruction passes through the cpu's name etc. but lacks the bit 11 (CPU_FEATURE_SEP) that indicates support for sysenter. I tried to alter a kernel that I have developed to skip the check for this particular bit and it worked. So there seems to be support for SYSENTER/SYSEXIT anyway.

best, nurnware

#1249 fixed Display hangs on Mac OS X Leopard when running Kermit/95 robertr64
Description

The virtual machine freezes up on a Mac OS X host when running Columbia University's Kermit/95 application on a Windows XP guest. The same app is OK from Windows or Linux. Oddly, it works fine when run from a Windows Remote Desktop session, so it seems to be some problem with the Mac local display handling.

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