Public bug reported:
I have an ipv4 entry for a key host on my network listed in /etc/hosts,
for network recovery purposes. This host also has ipv6 connectivity;
the ipv6 address is resolvable via DNS, but I do not have it in
/etc/hosts. Resolution of hostname should be independent for each
address family.
Two days ago (I don't know what changed to trigger this), I stopped
being able to resolve the ipv6 address for this host. I traced this
down to systemd-resolved, returning a lookup failure for the nss
request, because the ipv6 address is not listed in /etc/hosts.
Removing resolve from /etc/nsswitch.conf restores the correct behavior.
Removing the ipv4 entry for the host restores the correct behavior.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: systemd 231-9ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
Uname: Linux 4.8.0-27-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Nov 23 08:13:33 2016
InstallationDate: Installed on 2010-09-24 (2252 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: LENOVO 2306CTO
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-27-generic.efi.signed
root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to yakkety on 2016-10-28 (25 days ago)
dmi.bios.date: 10/25/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET97WW (2.57 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2306CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2306CTO
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
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https://bugs.launchpad.net/bugs/1644330
Title:
systemd-resolved assumes that /etc/hosts for one address family means
it doesn't ask DNS for another
Status in systemd package in Ubuntu:
New
Bug description:
I have an ipv4 entry for a key host on my network listed in
/etc/hosts, for network recovery purposes. This host also has ipv6
connectivity; the ipv6 address is resolvable via DNS, but I do not
have it in /etc/hosts. Resolution of hostname should be independent
for each address family.
Two days ago (I don't know what changed to trigger this), I stopped
being able to resolve the ipv6 address for this host. I traced this
down to systemd-resolved, returning a lookup failure for the nss
request, because the ipv6 address is not listed in /etc/hosts.
Removing resolve from /etc/nsswitch.conf restores the correct
behavior.
Removing the ipv4 entry for the host restores the correct behavior.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: systemd 231-9ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
Uname: Linux 4.8.0-27-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Nov 23 08:13:33 2016
InstallationDate: Installed on 2010-09-24 (2252 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64
(20100816.1)
MachineType: LENOVO 2306CTO
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-27-generic.efi.signed
root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to yakkety on 2016-10-28 (25 days ago)
dmi.bios.date: 10/25/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET97WW (2.57 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2306CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2306CTO
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
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