udev is creating symlinks for optical drives incorrectly

Udev is creating symlinks for /dev/dvd and /dev/dvd1 both pointing to /dev/sr1, despite the fact that the machine discovers (and I can use /dev/sr0.

(I have two DVD-RW drives in this machine, both of the same make and model.) I have tried removing /etc/udev/rules.d/70-persistent-cd.rules, and it hasn't helped.

As a workaround, I am using the /dev/sr0 and /dev/sr1 block devices for the moment. This seems to be a new behavior with 12.10.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: udev 175-0ubuntu13
ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
Uname: Linux 3.5.0-19-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Thu Nov 29 20:30:18 2012
InstallationDate: Installed on 2011-06-30 (518 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
MachineType: Si Si-DH67BL-Media
MarkForUpload: True
ProcEnviron:
 PATH=(custom, user)
 SHELL=/usr/bin/zsh
 TERM=xterm
 LANG=en_US.UTF-8
 XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic root=UUID=657996c6-d1cb-4cf8-94ab-313ac6780be8 ro text nosplash
SourcePackage: udev
UpgradeStatus: Upgraded to quantal on 2012-10-13 (47 days ago)
dmi.bios.date: 07/05/2011
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BLH6710H.86A.0125.2011.0705.1517
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH67BL
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG10189-207
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBLH6710H.86A.0125.2011.0705.1517:bd07/05/2011:svnSi:pnSi-DH67BL-Media:pvr:rvnIntelCorporation:rnDH67BL:rvrAAG10189-207:cvn:ct3:cvr:
dmi.product.name: Si-DH67BL-Media
dmi.sys.vendor: Si