On 4/11/21 8:06 AM, Eric Dumazet wrote: > On Sun, Apr 11, 2021 at 3:43 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > >> This patch causes a virtio-net interface failure when booting sh4 images >> in qemu. The test case is nothing special: Just try to get an IP address >> using udhcpc. If it fails, udhcpc reports: >> >> udhcpc: started, v1.33.0 >> udhcpc: sending discover >> FAIL >> > > Can you investigate where the incoming packet is dropped ? > Unless I am missing something, packets are not dropped. It looks more like udhcpc gets bad indigestion in the receive path and exits immediately. Plus, it doesn't happen all the time; sometimes it receives the discover response and is able to obtain an IP address. Overall this is quite puzzling since udhcpc exits immediately when the problem is seen, no matter which option I give it on the command line; it should not really do that. Guenter _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
