Somebody else showed up on IRC with similar symptoms, so I've been
making progress on this. So far, I've found three underlying problems:
* initramfs-tools' configure_networking function is hardcoded (by means of
/etc/initramfs-tools/initramfs.conf) to default to bringing up eth0.
partman-iscsi needs to remember which device was configured in netcfg, and
open-iscsi needs to make use of that in its initramfs script.
* /etc/udev/rules.d/70-persistent-net.rules is not copied into the initramfs,
so network device order in the initramfs is not deterministic. I'm not sure
right now whether to do that in open-iscsi or centrally in udev, given that a
similar problem is likely to afflict NFS-root and NBD-root cases.
** Changed in: partman-iscsi (Ubuntu)
Importance: Undecided => High
** Changed in: partman-iscsi (Ubuntu)
Status: Incomplete => In Progress
** Changed in: partman-iscsi (Ubuntu)
Assignee: (unassigned) => Colin Watson (cjwatson)
** Also affects: open-iscsi (Ubuntu)
Importance: Undecided
Status: New
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iscsi-root install will only use net0 for iscsi-target connectivity
https://bugs.launchpad.net/bugs/473036
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