[SOLVED] ERR_CONNECTION_RESET After upgrading to 19.1

[logo2002]

My Iphone is unable to reach the apple store but can access some website.

I'm sure that I'm not the only one getting this issue

[mimugmail]

Do you have Realtek NIC?
Can you check this:

https://forum.opnsense.org/index.php?topic=11425.0

[logo2002]

Yes and yes the MTU is set to 576 on my WAN.

I tried to force the MTU to 1500 on the interface but in CLI with ifconfig the interface stays at 576 even if I reboot thé opnsense.

I saw on internet that this settings are transmitted by DHCP on WAN are they any ways to disable the 576 ?

Thanks

[mimugmail]

You should be able to set it via UI in Interface config

[logo2002]

Yes that's what I do but after that I am loosing packet to internet (Ping command).
And I check with ifconfig and the interface stays at 576 even if it's configured on GUI

[logo2002]

Issue coming from MTU set to 576 by DHCP on WAN.

See post : https://forum.opnsense.org/index.php?topic=11425.0

[mimugmail]

In Interface Config under DHCP, Client Config, Advanced, set:

supersede interface-mtu 0

in Option Modifiers ...

Then try again ..

[logo2002]

@Mimugmail

Thank you so much you solve my issue !

With this option the MTU keeps running at 1500 using the DHCP.

Thank you again

[Northguy]

@All: experienced the same. Clear Chrome browsing history (assuming you use chrome) solved my issue.

https://www.webnots.com/how-to-fix-err_connection_reset-error-in-google-chrome/

Thx!

It was a temporary fix and ended up in the same issue as all the others. MTU 576 on WAN. WAN configured as DHCP on APU2D4 (intel NICs).

Applied supersede interface-mtu 0 in Option modifiers of WAN interface, which fixed the "problem"

[HFsi]

After aplying "supersede interface-mtu 0" and rebooting, I get continuosly this kind of error:

Configuring WAN interface...ahcich0: Timeout on slot 6 port 0
ahcich0: is 000000 cs 0000000 ss 00000040 rs 00000040 tfd 50 serr 00000000 cmd 0000d717
(ada0:ahcich0:0:0:0): SEND_FPDMA_QUEUED DATA SET MANAGEMENT. ACB: 64 01 00 00 00 40 00 00 00 00
(ada0:ahcich0:0:0:0): CAM status: Command timeout
(ada0:ahcich0:0:0:0): Retrying command

and my SSD keeps R/W all the time, and I lost all connectivity, even LAN

For the record, It´s a clean install

[newsense]

That sounds like a BIOS/coreboot issue, what hardware are you running it on ?

[HFsi]

I´m using this:
http://www.xcyminipc.com/product/showproduct.php?lang=en&id=51

Had no problems with 18.1 and 18.7
It all started with 19.1 (upgraded or clean install)

[newsense]

1. Check for a new BIOS

2. See if the mitigation steps here apply to your CPU as well

https://forum.opnsense.org/index.php?topic=11419.msg52375#msg52375