!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.org256 Servers

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5 Apr 2026
@flokli:matrix.orgfloklinsncd is18:05:02
@flokli:matrix.orgfloklinscd is glibc18:05:06
@hexa:lossy.networkhexa (clat on linux when)true18:05:20
@m1cr0man:m1cr0man.comm1cr0man yeah either or, this is a wire protocol limitation right? I did give your blog post a good read :) 18:05:32
@flokli:matrix.orgflokliyes18:05:43
@flokli:matrix.orgfloklii should write a followup rant complaining about the lack of scope ids in the wire protocol18:06:17
@flokli:matrix.orgfloklior someone else does it and I link to it, or somethign18:06:34
@flokli:matrix.orgflokli * 18:06:36
@m1cr0man:m1cr0man.comm1cr0man Alas, this is only an issue for ipv6 link local addresses, and one of the easiest solutions for nspawn is to just assign a ULA or global ipv6 prefix to the container. I think I can live with that. 18:10:55
@flokli:matrix.orgflokliok18:11:12
@m1cr0man:m1cr0man.comm1cr0manIt's the year of RFC108 if I can help it :)18:11:31
@ma27:nicht-so.sexyma27 (networkd by default when)not sure I follow: don't we use nsncd as nss via ipc thing to prevent a whole lot of ABI issues you'd get by dlopening misc nss libraries into processes directly?18:30:54
@m1cr0man:m1cr0man.comm1cr0manYeah that's all spot on. My hope in "edits to nsncd" was to make it send the scope_id, but it is a protocol issue, so that won't work. I'm not sure how prolific the dlopen issues would really be for this specifically (on my own system) because the only special ones are in the systemd package, so adding that to a global LD_LIBRARY_PATH would be OK for me - but that's not tenable for nixos defaults.20:50:15
6 Apr 2026
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7 Apr 2026
@hexa:lossy.networkhexa (clat on linux when)https://github.com/NixOS/nixpkgs/pull/50776123:43:08
8 Apr 2026
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12 Apr 2026
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13 Apr 2026
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@rvdp:infosec.exchangeRamses 🇵🇸in case anyone else has forwarding broken randomly after switching configs: https://github.com/NixOS/nixpkgs/pull/50964818:01:38
@k900:0upti.meK900Probably needs staging-nixos?18:03:37
@rvdp:infosec.exchangeRamses 🇵🇸Yeah, just retargeted18:06:31
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14 Apr 2026
@uep:matrix.orguep

i'm getting coredumps from bind nameservice daemon, cause unclear. The last thing in the logs is

network unreachable resolving 'ns1.anycastdns.cz/A/IN': 2a00:fea0:dead::beef#53

though it's not certain that this is the cause, nor would I expect bind to coredump on such an error

01:17:10
@uep:matrix.orguepanyone else seeing similar, known issue, just me, etc?01:17:23

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