At some point along the line this bug has been fixed:
kjotte@mystic:/tmp/sane-backends-1.0.27/backend$ grep -n gethostbyname pixma*
kjotte@mystic:/tmp/sane-backends-1.0.27/backend$ grep -n getaddrinfo pixma*
pixma_bjnp.c:849: if (getaddrinfo(host , service, NULL, &results) == 0)
pixma_bjnp.c:1714: result = getaddrinfo (host, port, &hints, &res );
Tested with same scanner in IPv6 only mode. Discovery and scanning are
working correctly.
Manual specification with pixma.conf of a device with AAAA record also appears
succesful:
$ scanimage -L
device `pixma:MX870_gonzo' is a CANON Canon PIXMA MX870 multi-function
peripheral
** Changed in: sane-backends (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1160650
Title:
cannot detect IPv6 scanner
Status in sane-backends package in Ubuntu:
Fix Released
Bug description:
A network scanner running only in IPv6 mode cannot be detected by
SANE.
$ avahi-browse -av
Server version: avahi 0.6.31; Host name: scooter.local
E Ifce Prot Name Type
Domain
...
+ wlan0 IPv6 Canon MX870 series _3E420E3BFE0D _scanner._tcp
local
$ scanimage -L
scanimage: no SANE devices found
However, if the device is configured for IPv4, it is visiable to SANE:
$ avahi-browse -av
Server version: avahi 0.6.31; Host name: scooter.local
E Ifce Prot Name Type
Domain
...
+ wlan0 IPv4 Canon MX870 series _3E420E3BFE0D _scanner._tcp
local
$ scanimage -L
device `pixma:MX870_gonzo' is a CANON Canon PIXMA MX870 multi-function
peripheral
The device in question can only operate in one mode or the other, not
dual-stack. We would prefer to use IPv6 wherever possible in our
environment, so this is a blocker.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: libsane 1.0.23-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic i686
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
Date: Tue Mar 26 20:07:52 2013
InstallationDate: Installed on 2013-01-23 (62 days ago)
InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.1)
MarkForUpload: True
SourcePackage: sane-backends
UpgradeStatus: No upgrade log present (probably fresh install)
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