!tCyGickeVqkHsYjWnh:nixos.org

NixOS Networking

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Declaratively manage your switching, routing, wireless, tunneling and more. | Don't rely on `networking.*` for interface and routing setup, use systemd-networkd, ifstate or NetworkManager instead. | Set `SYSTEMD_LOG_LEVEL=debug` to debug networking issues with networkd | No bad nft puns, please. | Room recommendations: #sysops:nixos.org251 Servers

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SenderMessageTime
13 Jun 2025
@magic_rb:numtide.com@magic_rb:numtide.comwill try cutting14:51:11
@magic_rb:numtide.com@magic_rb:numtide.comalso14:51:14
@emilazy:matrix.orgemilythe more I investigate this PPP stuff the less sense it makes14:51:32
@magic_rb:numtide.com@magic_rb:numtide.comhttps://gitlab.com/K900/nix/-/blob/master/shared/platform/bpi-r4.nix#L70 what does this do?14:51:39
@magic_rb:numtide.com@magic_rb:numtide.comwhy is it there, i copied it but i have no clue why its there14:51:47
@emilazy:matrix.orgemily

OpenWrt:

Fri Jun 13 14:22:09 2025 daemon.debug pppd[3465]: sent [LCP ConfReq id=0x1 <mru 1492> <magic 0xa3c5f758>]
Fri Jun 13 14:22:09 2025 daemon.debug pppd[3465]: rcvd [LCP ConfReq id=0x49 <auth chap MD5> <magic 0x45a13285>]
Fri Jun 13 14:22:09 2025 daemon.debug pppd[3465]: sent [LCP ConfAck id=0x49 <auth chap MD5> <magic 0x45a13285>]
Fri Jun 13 14:22:09 2025 daemon.debug pppd[3465]: rcvd [LCP ConfAck id=0x1 <mru 1492> <magic 0xa3c5f758>]
Fri Jun 13 14:22:09 2025 daemon.debug pppd[3465]: sent [LCP EchoReq id=0x0 magic=0xa3c5f758]

NixOS with the exact same MTU/MRU configuration:

Jun 13 14:47:09 bpi-r4 pppd[1784]: sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x549f006a>]
Jun 13 14:47:12 bpi-r4 pppd[1784]: rcvd [LCP ConfReq id=0x80 <auth chap MD5> <magic 0x40db49af>]
Jun 13 14:47:12 bpi-r4 pppd[1784]: sent [LCP ConfAck id=0x80 <auth chap MD5> <magic 0x40db49af>]
Jun 13 14:47:12 bpi-r4 pppd[1784]: sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x549f006a>]
Jun 13 14:47:15 bpi-r4 pppd[1784]: sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x549f006a>]
Jun 13 14:47:16 bpi-r4 pppd[1784]: rcvd [LCP ConfReq id=0x81 <auth chap MD5> <magic 0x40db49af>]
Jun 13 14:47:16 bpi-r4 pppd[1784]: sent [LCP ConfAck id=0x81 <auth chap MD5> <magic 0x40db49af>]
Jun 13 14:47:18 bpi-r4 pppd[1784]: sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x549f006a>]
[gets stuck forever]
14:52:04
@k900:0upti.meK900
In reply to @magic_rb:numtide.com
https://gitlab.com/K900/nix/-/blob/master/shared/platform/bpi-r4.nix#L70 what does this do?
What, the runCommand?
14:52:19
@emilazy:matrix.orgemilyhow come NixOS sends the exact same requests as OpenWrt, but the ISP acks it when OpenWrt does it and ignores NixOS???14:52:23
@magic_rb:numtide.com@magic_rb:numtide.comyeah14:52:33
@k900:0upti.meK900 Saves me from uploading 700MB of linux-firmware to the thing every other week is what 14:52:34
@magic_rb:numtide.com@magic_rb:numtide.comoh so you build a firmware which contains only firmware you actually need?14:52:55
@k900:0upti.meK900 Less relevant now that it's on a non-shit drive 14:53:02
@magic_rb:numtide.com@magic_rb:numtide.comso i shouldnt need that, got it14:53:13
@k900:0upti.meK900But copying that to the eMMC fucking suuuuuuuucked14:53:22
@k900:0upti.meK900
In reply to @magic_rb:numtide.com
oh so you build a firmware which contains only firmware you actually need?
Well, "build", as in I just yoink the one directory I care about from nixpkgs linux-firmware
14:53:43
@magic_rb:numtide.com@magic_rb:numtide.comlast time i had that, it was due to the hardware of the bpi not being able to handle sub 40 byte packets properly, but that fixed made it into franks tree (courtesy of yours truly) and then i assume into k900's tree and maybe mainline?14:54:03
@magic_rb:numtide.com@magic_rb:numtide.comyeah i just was confused what youre doing there, because it seemed like you were doing exactly what you were doing, but i failed to consider the why14:54:23
@magic_rb:numtide.com@magic_rb:numtide.comnow it makes sense :)14:54:27
@magic_rb:numtide.com@magic_rb:numtide.comokay, ill try the hard reboot14:54:42
@emilazy:matrix.orgemilywait are you on PPP too?14:54:49
@k900:0upti.meK900 I am actually not sure if that fix is in mainline 14:54:59
@magic_rb:numtide.com@magic_rb:numtide.comyes, KPN in the NL does PPPoE14:55:01
@k900:0upti.meK900But it's not in mainline..my current tree14:55:08
@magic_rb:numtide.com@magic_rb:numtide.comwell, it must be somewhere, because my internet works14:55:25
@k900:0upti.meK900On 6.16-rc1?14:55:34
@magic_rb:numtide.com@magic_rb:numtide.comuh14:55:42
@magic_rb:numtide.com@magic_rb:numtide.comno 6.114:55:49
@emilazy:matrix.orgemilyif there's a kernel patch I can try applying I'll apply it.14:55:52
@magic_rb:numtide.com@magic_rb:numtide.com* no 6.1514:55:53
@magic_rb:numtide.com@magic_rb:numtide.comright, so emily if youre on 6.16 you probably dont have the fix14:56:03

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