Custom Query (16363 matches)
Results (535 - 537 of 16363)
| Ticket | Resolution | Summary | Owner | Reporter |
|---|---|---|---|---|
| #19932 | invalid | Settings key | ||
| Description |
when I pressed the settings key off the main screen, the 'ok' key is greyed out so I can not save the information that is changed... |
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| #19931 | duplicate | Settings key => duplicate of #19332 | ||
| Description |
when I pressed the settings key off the main screen, the 'ok' key is greyed out so I can not save the information that is changed... |
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| #19930 | fixed | Host-only networking virtual device inserts incorrect UDP checksum (checksum offloading) in rare case | ||
| Description |
When using host-only networking with a transmitting guest OS that offloads the Internet checksum to hardware, in a certain rare case the inserted checksum is incorrect, such that it is discarded by the destination OS. Instructions to reproduce:
expected behavior:
observed behavior:
Notes: as the UDP checksum scope includes the IP header, you will need to use the same source and destination addresses, among other data. The correct checksum value comes from Wireshark, and is consistent with this sentence in RFC 768: "If the computed checksum is zero, it is transmitted as all ones (the equivalent in one's complement arithmetic)"; as of revision 86228 of DevE1000.cpp, this does not appear to be observed. While this issue was uncovered with UDP, TCP would appear to have the same issue, though I have not similarly checked its standards documents. For what it's worth, both guest OS are Linux, and at no point were raw sockets used, only regular datagram sockets in the AF_INET6 domain. Seen with Version 6.1.12 r139181 (Qt5.6.2). I do not have the development environment in place to include a patch. |
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