X520 errors in 2.6 and 22.01?
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 Well errors in could be a cable issue or dirt on the optics etc. That would not normally cause errors out which imply it's unable to send for some reason. SFP over-heated etc. Though in my case it's probably just that the parent interfaces was down. Steve 
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 i also have the same problem after upgrading to 2.6. with the sysctl command I found that the errors are associated with this: 
 mac_stats.checksum_errs: 41177
 it's annoying and I'd like to fix it. 
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 So you definitely didn't see those errors in 2.5.2? 41177 is very different to 3170, what makes you think they are related? Do you have checksum hardware off-loading enabled? Steve 
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 The image is after a reboot. Never an error with the 2.5.2 . The "Hardware Checksum Offloading" is enable by default. 
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 Ok, so before that the checksum error count matched? Try disabling checksum off-loading. Steve 
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 Yes, the value is the same. I tried to disable "Hardware Checksum Offloading" but it didn't work. thank you for the support 
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 Like it didn't disable it or just didn't change the error count? The errors could be genuine of course. Perhaps the updated driver is now reflecting the correct values. Steve 
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 With a VM i compiled the latest driver ("if_ix.ko" ver3.3.29) for freebsd 12.3 and I put it in the pfsense, but I got nothing! Any idea? 
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 I'm not sure how helpful this will be, but it looks like there were several updates made to the Intel drivers in FreeBSD 12.3 (look under Drives): https://www.freebsd.org/releases/12.3R/relnotes/ The issue might be upstream from pfSense. 
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 @stephenw10 said in X520 errors in 2.6 and 22.01?: Like it didn't disable it or just didn't change the error count? ^? Does it show your new driver was correctly loaded at boot? If not does it show an error? 
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  The driver is loaded correctly. I think the driver is not the real problem. If it can help, my switch is a hp/aruba JL261A. In the next few days I will try to install some fiber optic transceivers. The driver is loaded correctly. I think the driver is not the real problem. If it can help, my switch is a hp/aruba JL261A. In the next few days I will try to install some fiber optic transceivers.
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 @cescofs said in X520 errors in 2.6 and 22.01?: I tried to disable "Hardware Checksum Offloading" but it didn't work. It didn't get disabled or it didn't affect the error count? 
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 @stephenw10 Can't speak for @cescofs but all that stuff is disabled on my end:  My error count is relatively small at 1105 with 5 days of uptime and passing through 464GiB of data but it's still higher than the 0 on 2.5.2 
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 Mmm, that's a very small number really though. That would not concern me. 
 Is that still rising? That could all have been when the interface came up for example.Steve 
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 @stephenw10 
 After disabling it, the errors were still there.
 Since there are no errors in the output, the drivers should be excluded as a cause.
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 @stephenw10 right after booting i had 83 errors. The current count grew a little every day for the last 5 days. 
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 @tom-ato 
 it's the same for me
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 I found this .... 
 link text
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 Do you actually see the new driver loaded though: [22.01-RELEASE][admin@6100-2.stevew.lan]/root: sysctl dev.ix.0.iflib.driver_version dev.ix.0.iflib.driver_version: 4.0.1-k
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 no. to find a solution I downloaded the latest version from the intel site for freebsd
