Bug 58 - rootless TUN/TAP interface issues causing timeouts
Summary: rootless TUN/TAP interface issues causing timeouts
Status: CONFIRMED
Alias: None
Product: passt
Classification: Unclassified
Component: general (show other bugs)
Version: unspecified
Hardware: All Linux
: Normal quite bad
Assignee: Stefano Brivio
URL:
Depends on:
Blocks:
 
Reported: 2023-06-24 17:13 UTC by KuhnChris
Modified: 2024-01-17 03:10 UTC (History)
2 users (show)

See Also:


Attachments

Description KuhnChris 2023-06-24 17:13:07 UTC
This is also in reply to an IRC conversation with sbrivio we had for quite some time.
- Originally this was thought to be a musl issue, but after testing on libc-based distros aswell, this is a general issue.
- This issue also not always shows up, but on some distributions it shows up even more frequent (libc seems to be affected harder than musl)
- The issue happens quite fast and frequent on the OVH Kimsufi (lowest tier) with the following setup:

00:00.0 Host bridge: Intel Corporation Atom Processor D2xxx/N2xxx DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller (rev 09)
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02)
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation NM10/ICH7 Family SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02)
01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection

- Key issues of this problem is: the connection from outside into the pasta network runs into some kind of timeout issue, after the timeout within the pasta triggers (typically within 50-60 seconds), the connection resumes for a couple of data frames, and then breaks again with a timeout loop.
Comment 1 David Gibson 2024-01-17 03:10:15 UTC
KuhnChris, have you retested this issue with the current passt version?  It sounds like it might be related to one of the fair number of bugs we fixed over the last 3-6 months.

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