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Ubuntu.
Looking at the code, IFS is probably not set at that stage. So the
delimiter will be space (" "). So I would expect vlan="eno1.123:eno1
eno2.456:eno2" to work, but I guess the cmdline parsing does not handle
quoted spaces correctly.
Do we have documentation (e.g. man page) saying anything how that should
work?
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https://bugs.launchpad.net/bugs/2085598
Title:
Support for multiple VLANs with vlan=<name>.<dev>
Status in initramfs-tools package in Ubuntu:
New
Bug description:
In initramfs-tools manual, the vlan section indicates that it's
possible to configure multiple VLAN.
> vlan tells to create a VLAN tagged device. Allows one to
configure
> one or multiple VLAN tagged devices using
the
> "vlan=$name.$id:$parent" syntax. E.g. "vlan=eth0.1:eth0" Op‐
> tional parameter for NFS root.
I couldn't figure out the correct syntax for multiple VLAN interfaces
however.
There is indeed a loop `for v in $VLAN`[1] in the code, but the
parsing doesn't support either spaces (vlan="eno1.123:eno1
eno2.456:eno2"), commas (vlan=eno1.123:eno1,eno2.456:eno2) or multiple
definitions (vlan= eno1.123:eno1 vlan=eno2.456:eno2)[2].
I actually don't really need multiple VLAN, but I was trying to
workaround the need to hardcode the name of the interface to support
different hardware (I'm working on PXE Ubuntu deployment on a tagged
VLAN).
[1]: https://git.launchpad.net/ubuntu/+source/initramfs-
tools/tree/scripts/functions?h=applied/ubuntu/noble#n369
[2]:https://git.launchpad.net/ubuntu/+source/initramfs-
tools/tree/init?h=applied/ubuntu/noble#n159
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