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NixOS Networking

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13 Jun 2025
@magic_rb:numtide.com@magic_rb:numtide.comif you have ipv415:05:03
@magic_rb:numtide.com@magic_rb:numtide.comi wouldnt get ipv4 either15:05:07
@emilazy:matrix.orgemilyand I can't imagine the v6 negotiation packets are smaller15:05:12
@emilazy:matrix.orgemilybut maybe it'll fix the MTU crap15:05:12
@magic_rb:numtide.com@magic_rb:numtide.comfix the mtu crap15:05:22
@magic_rb:numtide.com@magic_rb:numtide.com cache.nixos.org wont work if i dont fix it 15:05:31
@magic_rb:numtide.com@magic_rb:numtide.com rmmod and modprobe did nothing 15:05:47
@emilazy:matrix.orgemilywell it never got to the point of negotiating v415:05:35
@emilazy:matrix.orgemilyuntil I set `default-mru15:05:38
@emilazy:matrix.orgemily * until I set default-mru 15:05:41
@emilazy:matrix.orgemilywhich actually15:05:47
@emilazy:matrix.orgemily it'd be sending packets with magic and no mru, they'd be strictly smaller 15:05:54
@emilazy:matrix.orgemilyso I don't see how this patch can be it15:05:59
@magic_rb:numtide.com@magic_rb:numtide.comfix your mtu crap15:06:11
@magic_rb:numtide.com@magic_rb:numtide.comfirst i think15:06:16
@emilazy:matrix.orgemily did you ever run pppd with debug when you had the issue? 15:06:22
@magic_rb:numtide.com@magic_rb:numtide.comrefer to that attrset ^15:06:28
@magic_rb:numtide.com@magic_rb:numtide.comno15:06:32
@magic_rb:numtide.com@magic_rb:numtide.compppd has a debug option?15:06:38
@emilazy:matrix.orgemilypretty sure my MTU crap is fine.15:06:41
@emilazy:matrix.orgemily like I'll configure jumbo frames later but end0 has 1504, wan has 1500, ppp-wan has 1492. 15:07:00
@emilazy:matrix.orgemily when I use default-mru and it doesn't explicitly negotiate 1492 it works fine. it's just when it actually tries to negotiate 1492 actively that it gets ignored where OpenWrt doesn't. 15:07:17
@emilazy:matrix.orgemilyyes, it prints all the negotiation packets15:07:28
@emilazy:matrix.orgemilyanyway I'll try the patch but I'm not optimistic15:08:07
@magic_rb:numtide.com@magic_rb:numtide.commaybe my firmware is too old15:08:29
@magic_rb:numtide.com@magic_rb:numtide.comill try loading in linux-firmware-g8it15:08:52
@magic_rb:numtide.com@magic_rb:numtide.com* ill try loading in linux-firmware-git15:08:54
@emilazy:matrix.orgemilywait firmware?15:09:21
@emilazy:matrix.orgemilyI'm lost15:09:26
@magic_rb:numtide.com@magic_rb:numtide.comim debugging the wifi15:10:30

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