IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 9 February 2019   (all times are UTC)

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07:59
<alkisg>
vagrantc: Debian's initramfs-tools don't support ipv6 yet, right? In Ubuntu, dhclient is included, and there are scripts that call dhclient -6, but I think this code is patches from Ubuntu that haven't made it to Debian yet?
08:21* vagrantc hasn't looked
08:24
<vagrantc>
alkisg: pretty sure it still uses klibc's ipconfig
08:24
but you could easily put a real dhclient in there
08:27
<alkisg>
vagrantc: I mean, we can't just rely on passing ip6=dhcp in the cmdline, we'd have to put distro-specific code
08:28
Even if we put dhclient in the initramfs, that is
08:30* alkisg is currently playing with macvlan interfaces, to see if we can get a separate virtual interface for ltsp, with a static ipv6 address that the OS won't touch after booting...
08:34
<alkisg>
Huh. With ra-stateless, there's no need for dhclient, ip up => gives ip!
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08:35* alkisg verifies this with buster's initramfs...
08:36
<alkisg>
vagrantc: what if we just hardcode the ltsp server ipv6 ip? It can have multiple IPs, we can just require a static ULA (unique local address)...
08:36
And if users need more servers, this will be the main one with "lts.conf", that will direct them to load balancing etc
08:39
Example. I set server-ip=fd61:6c6b:6972::1, dnsmasq.conf=ra-stateless, and run `ip link set dev enp0s3 up` in the initramfs,
08:39
2 secs later, the client has fd61:6c6b:6972::mac:address ready
08:40
So it can contact the ltsp server via ipv6 even over bridges if needed
08:51
Yup, looks great, I'll definitely add that as an option. Especially useful when someone boots from local kernel, with no configurable dhcp server around, and doesn't want to hardcode the ltsp server ip.
08:52
And it should work in all kernels/distros
09:22
<vagrantc>
single point of failure, though...
09:24
<alkisg>
Oh you can pass another one if the cmdline or from dhcp if you want to
09:24
*in the cmdline
09:24
It'll just be the "failsafe default"
09:25
Also,it's possible for 2 machines to have the same ip :)
09:25
8.8.8.8 isn't a single ip...
09:25
*single machine...
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