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NixOS Networking

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Declaratively manage your switching, routing, wireless, tunneling and more.277 Servers

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SenderMessageTime
5 May 2026
@elisaado:elisaado.comEli Saadoyes, appeltaart from the AH12:23:21
@magic_rb:matrix.redalder.orgmagic_rbdamn im good12:23:26
@magic_rb:matrix.redalder.orgmagic_rb(maybe i should eat less cake)12:23:32
@retr0:p1ka.euRetro 💕 joined the room.18:36:15
7 May 2026
@bart:bartoostveen.nlBart joined the room.17:40:42
8 May 2026
@jopejoe1:matrix.orgjopejoe1 changed their display name from jopejoe1 (4094@epvpn) to jopejoe1.08:46:03
9 May 2026
@ahamon:matrix.orgAndy Hamon

haven't yet measured power yet.

price was ~$250USD for the PoE one. I see auctions for way less

i usually do brocade icx6610

tell me more... does this run nixos? what about upstream/stock linux kernel?

03:35:18
@ahamon:matrix.orgAndy Hamon *

haven't yet measured power yet.

price was ~$250USD for the PoE one. I see auctions for way less though.

i usually do brocade icx6610

tell me more... does this run nixos? what about upstream/stock linux kernel?

03:35:35
@raitobezarius:matrix.orgraitobezarius
In reply to @ahamon:matrix.org

haven't yet measured power yet.

price was ~$250USD for the PoE one. I see auctions for way less though.

i usually do brocade icx6610

tell me more... does this run nixos? what about upstream/stock linux kernel?

Brocade ICX6610 is a PowerPC application processor but extremely featureful with OpenFlow 1.2 so it's possible to do some nice SDN declarative stuff while touching seldomly the OS
09:45:57
@raitobezarius:matrix.orgraitobezariusIt's also quite power efficient09:46:03
@raitobezarius:matrix.orgraitobezarius2*40G, 16*10G, 48*1G with PoE variants09:46:20
@raitobezarius:matrix.orgraitobezariusCan be found for ~100-200USD09:46:31
@raitobezarius:matrix.orgraitobezariusIt cannot run an Linux OS at all except if you want a fun porting project09:46:53
@raitobezarius:matrix.orgraitobezariusNewer Brocade have proper ARM but probably no upstream Linux support I'd argue, but it's not that hard to add it09:47:55
12 May 2026
@mrfoxpro:matrix.org@mrfoxpro:matrix.org left the room.17:45:43
@elisaado:elisaado.comEli Saado should I trust the networking.nat.* options or should I use raw nftables instead? 22:01:55
@me:m4rc3l.deMarcelI use it on my gateway without issues.22:14:34
@elisaado:elisaado.comEli Saadoyay22:33:14
13 May 2026
@hxr404:tchncs.de@hxr404:tchncs.de left the room.09:33:18
14 May 2026
@pederbs:pvv.ntnu.no@pederbs:pvv.ntnu.no left the room.01:35:52
16 May 2026
@catbrained:tchncs.decatbrained (she/her)

I just noticed a new interface show up when I do ip link:

ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/tunnel6 :: brd :: permaddr caf7:96db:24d5::

I'm not sure what this is and I have no clue why it's there. Doesn't seem to serve any purpose since it's DOWN and my internet is still working just fine. 🤷‍♀️
Not sure how long it's been there either.
I tried deleting it with ip link delete ip6tnl0 but it's still there.
Can anyone point me towards how I can figure out where this thing is coming from (and perhaps how to get rid of it)?

20:58:00
@rntpts:synapse.rntpts.derntptsUpdate: https://github.com/NixOS/nixpkgs/pull/51653921:01:16
@rntpts:synapse.rntpts.derntpts(to get rid of it)21:01:50
@catbrained:tchncs.decatbrained (she/her)Thank you! 🙏21:03:20
17 May 2026
@emilazy:matrix.orgemilyso what's the state of the art for exposing IPv4 ports when using NAT64?16:01:12
@emilazy:matrix.orgemilydoes PCP have a notion for that?16:02:07
@emilazy:matrix.orgemily(relatedly, what's the state of the art for NAT64 at this point? did that NetworkManager etc. stuff or the kernel-space stuff happen?)16:03:18
@hexa:lossy.networkhexapcp is something your isp would need to support16:03:20
@hexa:lossy.networkhexanm nat64 support did not land in the current release16:03:37
@hexa:lossy.networkhexait will land in the next16:03:40

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