No DNS resolving after update

**koen_dewitte** · 02-Jul-2017, 05:00

After an update I could not resolve any hostname and networkmanager icon showed a question mark (gnome applet)
If I use the networkmanager configuration applet to manually enter a DNS server and point it to my router, everything works.
So it seems that the DNS setting from the DHCP request is no longer applied.

These are the packages that were updated, could it be NetworkManager related?

2017-07-02 07:59:14|command|root@JDN-44752|'zypper' 'dup' '--no-allow-vendor-change'|
2017-07-02 07:59:15|install|bundle-lang-common-en|13.2-46.2|noarch||http-download.opensuse.org-044f1dd2|4654f8fc31f69f1ccf7e5c484f96ffb99c925f05d60e8d3f153437f3766fbfd4|
2017-07-02 07:59:17|install|bundle-lang-gnome-en|13.2-46.2|noarch||http-download.opensuse.org-044f1dd2|afbc894f873ff0fbdf172a29caf5fe4d4331e734fd629c7afcb51984715399db|
2017-07-02 07:59:57|install|kernel-firmware|20170622-1.1|noarch||http-download.opensuse.org-044f1dd2|2bdfdcabcea313f0013ee5c086ef2f32066b4d36421881e769a400d57f61f01b|
2017-07-02 07:59:58|install|libzypp-plugin-appdata|1.0+git.20150408-1.1|noarch||http-download.opensuse.org-044f1dd2|a9a6889c400e77317a898841a47af8facd75a88251cce880285c874a58855417|
2017-07-02 07:59:58|install|ucode-amd|20170622-1.1|noarch||http-download.opensuse.org-044f1dd2|afcf7020486cb751028790793131308c6b90049e18fd0d3d12bfa5e4e65235d0|
2017-07-02 08:00:05|install|git-core|2.13.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|00eb3f945fb88f7fd9a2e54b08f728a0c592b1db93c9ad5b38098744aa64e395|
2017-07-02 08:00:06|install|gnome-keyring-32bit|3.20.0-4.1|x86_64||http-download.opensuse.org-044f1dd2|354f43f3b4952529eef6901ae6b6ccacb63a86e2e9705e23690add3f2fc689b5|
2017-07-02 08:00:14|install|libQtQuick5|5.9.0-2.1|x86_64||http-download.opensuse.org-044f1dd2|f796622b87020dc465dc99d3d30ef57944fb1acb11f4cfbdc3d9e28f7ba7b82c|
2017-07-02 08:00:15|install|libglib-2_0-0|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|54b743532396150649c12303fd427aec1060be14d424b90b5bf1649bd4fdc94e|
2017-07-02 08:00:15|install|libical2|2.0.0-3.1|x86_64||http-download.opensuse.org-044f1dd2|492880e849c8f0d228ad5e09900414e0ec2a6c5d592071843a0783e3a7008b13|
2017-07-02 08:00:16|install|liblzma5-32bit|5.2.3-3.1|x86_64||http-download.opensuse.org-044f1dd2|c6d4a0a6221887c615b22f9e534e604c51dc91f1a3a3378eb1c486f2dc0ddf3b|
2017-07-02 08:00:16|install|liblzma5|5.2.3-3.1|x86_64||http-download.opensuse.org-044f1dd2|cc8a2f9d2064fdb4d533d24379bdb366e34bffd3d96f527a8ce064c2f96dbc41|
2017-07-02 08:00:18|install|libpoppler67|0.56.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|4449f1426c41d79b58dac988f22d03649884e92494cc48ae4260615aa8653feb|
2017-07-02 08:00:18|install|libwmf-0_2-7|0.2.8.4-244.1|x86_64||http-download.opensuse.org-044f1dd2|1268546545f69e71f959b8addeb7cfee8579874fd761d7f4432487286696255b|
2017-07-02 08:00:18|install|openSUSE-release-ftp|20170630-1.2|x86_64||http-download.opensuse.org-044f1dd2|401656d75c6a1895375e21d0d6f1cf4a6750fe2e99c5fcb6b76cd00848d9f20d|
2017-07-02 08:00:20|install|tcl|8.6.6-2.10|x86_64||http-download.opensuse.org-044f1dd2|7a6ccd9d7c5e0d44c17405600e000ee42a15cd6c2a5c5286b817ee21b3c85511|
2017-07-02 08:00:20|install|ucode-intel|20170511-2.1|x86_64||http-download.opensuse.org-044f1dd2|19c4f6e5e56dad48943f5dd48f28f852bafae6911ce9ae7b6dbb1d8090333bd1|
2017-07-02 08:00:24|install|valgrind|3.13.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|95d3d0fd3532bb72ec867b8977a18ab91f9852c2aca7bd2763f75036219abf36|
2017-07-02 08:00:25|install|gitk|2.13.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|9504c2be4e9a87e2874dee8bcd046aa3c6e7cc7971973bbd1df3c0e064a9d183|
2017-07-02 08:00:26|install|git-gui|2.13.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|afc0a4f8bd4895f5bfb623ffddbe21b6fa3a272d1b190b8919c7cf9db3a04a10|
2017-07-02 08:00:27|install|totem-pl-parser|3.10.8-1.1|x86_64||http-download.opensuse.org-044f1dd2|5388c34f9f6f71668a5bbe31e946ceb76dfdce62abd99981984db98a6c731e5e|
2017-07-02 08:00:35|install|libgthread-2_0-0|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|01a9bebd003faae6dfa7c88854a5454c2175dac742cb6c3652c3923c28da4dff|
2017-07-02 08:00:36|install|libgobject-2_0-0|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|9cb0d6ee07db70734a3403fcf6106c88fc06ac8b9861b7020b09749f0130afe2|
2017-07-02 08:00:36|install|libgmodule-2_0-0|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|ad58a0b3cf487669e05fbfa008929b6cbfd77cd4fbfe393b1dca26aaabce3f9a|
2017-07-02 08:00:36|install|xz|5.2.3-3.1|x86_64||http-download.opensuse.org-044f1dd2|452778a752fb1056f11c49982b3f15533b99691c003e003acae04efed643bb43|
2017-07-02 08:00:36|install|poppler-tools|0.56.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|daa467606779904f44ff865155420dbd617fe656923fef19c8aab056f006e801|
2017-07-02 08:00:37|install|openSUSE-release|20170630-1.2|x86_64||http-download.opensuse.org-044f1dd2|a84e1a26a3966101d4afa81f4b74e858497c14c4da6297a3adbb553f207871ef|
2017-07-02 08:00:38|install|libjavascriptcoregtk-4_0-18|2.16.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|c212fca64dfd5593b0be0cb586a50acafd603b0d53c16a16b98089a858908147|
2017-07-02 08:00:39|install|libvala-0_36-0|0.36.4-1.1|x86_64||http-download.opensuse.org-044f1dd2|1c5219441e94a9b98a0dda86cbce4942fb1b9f6bb48dfb5a9d5cbd24f4efa0a4|
2017-07-02 08:00:40|install|libglibmm-2_4-1|2.52.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|77ebee5585f8a38a0f4cdac99f93baa33435268605165d71d2aaee1442b6504e|
2017-07-02 08:00:41|install|libgck-modules-gnome-keyring|3.20.0-4.1|x86_64||http-download.opensuse.org-044f1dd2|9d3319f4afb075d8af8fcc3f0969f45a41d4c7ccadcef0010a567f8008ef6b36|
2017-07-02 08:00:41|install|glib2-tools|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|ef19b8d22d73c1898f3774a6be84017e09bb1defe4c873b017884bd3b5824197|
2017-07-02 08:00:42|install|typelib-1_0-JavaScriptCore-4_0|2.16.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|9cc173fe8ca9bedcbadfe94b8201f9e9f45ec2552d29508d0f9bbdb8e7153a43|
# 2017-07-02 08:00:45 vala-0.36.4-1.1.x86_64.rpm installed ok
# Additional rpm output:
# update-alternatives: warning: forcing reinstallation of alternative /usr/bin/vala-0.36 because link group vala is broken
#
2017-07-02 08:00:45|install|vala|0.36.4-1.1|x86_64||http-download.opensuse.org-044f1dd2|d25888ee0ea0ea1b0d4baed6c49784d5f5b1d003e8d85fa5e403dcaaadcc71ba|
2017-07-02 08:00:47|install|gio-branding-openSUSE|42.1-7.8|noarch||http-download.opensuse.org-044f1dd2|00b6a7b92648fd35eddbcce756957e5b95ac2f7d9d39c5c227d4d2e035d01965|
2017-07-02 08:00:48|install|libgio-2_0-0|2.52.3-1.1|x86_64||http-download.opensuse.org-044f1dd2|a1c0a6e0cce8c61460e5755495c25dd5ee7604a4503fa5a14ab04f1a30f778d7|
2017-07-02 08:00:48|install|nautilus-sendto|3.8.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|3184c0d486154d444d1e7907ec9e343b2b0582d6bce00ccbef69c42c6c318f78|
2017-07-02 08:00:49|install|libwebkit2gtk-4_0-37|2.16.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|267c756b1755de4cc6843754e8cbd24167f6e7af2b8f4028169edc6fd60e3d14|
2017-07-02 08:00:50|install|libtotem-plparser18|3.10.8-1.1|x86_64||http-download.opensuse.org-044f1dd2|62a0c22c9d4a784b68035bfcf79268760d296b391dd3c69802e8cc9bc26c338b|
2017-07-02 08:00:50|install|libtotem-plparser-mini18|3.10.8-1.1|x86_64||http-download.opensuse.org-044f1dd2|32014d87c40ace8e0425d9241bde02cebdeabf92be459fd307f042a080ee75ea|
2017-07-02 08:00:52|install|libpoppler-glib8|0.56.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|15a9d085962231d5f5bf60bb387f2f5f3b9143802dec85006d78fba4d246c316|
2017-07-02 08:00:53|install|libnm0|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|360dc708a66c93861bdb20c8d1d2a1d5fe3ed4db839fc95b129bfb65dfdbad60|
2017-07-02 08:00:54|install|libnm-util2|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|e232640dbb1437065e046bd927630a7f8848dce8245c4577fb73bf211818f5f6|
2017-07-02 08:00:54|install|libgiomm-2_4-1|2.52.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|3fcca7d87a29ecdab7ce4ca7d95cd57e5020b5a88ee6f8b92667d7ff9e3ecdaa|
2017-07-02 08:00:56|install|gnome-keyring|3.20.0-4.1|x86_64||http-download.opensuse.org-044f1dd2|8356ff594d3cfd7289133314af92d9712bbb945ea8e31952928a11309647e5b2|
2017-07-02 08:00:56|install|nma-data|1.8.2-1.1|noarch||http-download.opensuse.org-044f1dd2|267c93fa0d529f7764cdf48bbd2ccaf777d7cb0992dfc79290bd974e704ecd6e|
2017-07-02 08:00:56|install|webkit2gtk-4_0-injected-bundles|2.16.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|3d4b7b56f563c5656d8b1e3199e1d702807b06223b6facf3f7067f69fab8a02e|
2017-07-02 08:00:56|install|typelib-1_0-TotemPlParser-1_0|3.10.8-1.1|x86_64||http-download.opensuse.org-044f1dd2|edfedda12d7a9421174589a0e8fa7461c1adbe0abcded0a4d7ab94b8d38a4c3b|
2017-07-02 08:00:56|install|NetworkManager-branding-openSUSE|42.1-1.10|noarch||http-download.opensuse.org-044f1dd2|674bd8326853b1def5a7b663054878dd3d193ef67a730b9489e6235bdf7b64cc|
2017-07-02 08:00:57|install|typelib-1_0-NetworkManager-1_0|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|0a9b2674d871829abbb2c077858a547da151ba85827a0cfdfbcd3c5c1371697a|
2017-07-02 08:00:57|install|libnm-glib4|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|5c473af872416d6c55bd0cf9e0cca80b4a053620209ea3c8e3da70d1077ae73f|
2017-07-02 08:00:57|install|libnm-glib-vpn1|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|5b3befc37b2515eb1e93943b9ddaaac2e911edf3aedb0834cba095227bafb02d|
2017-07-02 08:00:59|install|libgtkmm-3_0-1|3.22.1-1.1|x86_64||http-download.opensuse.org-044f1dd2|61902b834793185391e64fcc4fb2da4478b07738d4d593e35a531391f0b645d4|
2017-07-02 08:00:59|install|gnome-keyring-pam|3.20.0-4.1|x86_64||http-download.opensuse.org-044f1dd2|0a318dce6282b2cd933b5a887dd5c752d31c3eba95437f0569465b246511d326|
2017-07-02 08:01:00|install|libnma0|1.8.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|6587490edaeb2b1ea9f4f3eb3b1aa8b2c057545483334f409cf15ff319bb4535|
2017-07-02 08:01:00|install|typelib-1_0-WebKit2-4_0|2.16.5-1.1|x86_64||http-download.opensuse.org-044f1dd2|aa727cf8f54f96c7c354eddfec3e0e3b22d13073ce4da7fb4c422b7912cb08c2|
2017-07-02 08:01:01|install|liferea|1.12~rc3-1.1|x86_64||http-download.opensuse.org-044f1dd2|01d226f41b87dddf63ef4b66af0b04445d22b6c9a7b33e69ec09172e94c46827|
2017-07-02 08:01:04|install|NetworkManager|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|97b2a296820cfc908beb5893ba1db176f3aba268c4c52cb4ea3d57621a94a54d|
2017-07-02 08:01:04|install|typelib-1_0-NMClient-1_0|1.8.0-1.1|x86_64||http-download.opensuse.org-044f1dd2|e084a2611a6a562e7768f1a082dd341276b8862acdd77284c3af87ec8976d36b|
2017-07-02 08:01:04|install|libnm-gtk0|1.8.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|b23b5efc48fdf4f448eaf52cf8876a06756890038537f9fafa3bf7cb49bb19b6|
2017-07-02 08:01:05|install|gnome-keyring-pam-32bit|3.20.0-4.1|x86_64||http-download.opensuse.org-044f1dd2|77262c179cc4bdd220758bab15be0b7a05a09510a66916250b80764f2153df6a|
2017-07-02 08:01:05|install|NetworkManager-connection-editor|1.8.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|c1bf313070952bd8724c710f004eb55fb58af3fc554d8c79b8e8c09011a6e41c|
2017-07-02 08:01:13|install|liferea-lang|1.12~rc3-1.1|noarch||http-download.opensuse.org-044f1dd2|c709e4327d3e085738eb807800d846ecb7781a1f55daa7cbf47791e4dccc6735|
2017-07-02 08:01:20|install|NetworkManager-applet|1.8.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|108f3c210c0bfdf153b88f575215ef1a7bd44615d6ce7dc02cb9a335bd553830|
2017-07-02 08:01:23|install|typelib-1_0-NMGtk-1_0|1.8.2-1.1|x86_64||http-download.opensuse.org-044f1dd2|972193100b4b6b613ee61e5711b67b1b5606e6400e67c4f4431f103c7a790cdf|
2017-07-02 08:01:24|install|libgstcodecparsers-1_0-0|1.12.1-4.4|x86_64||packman|049d7e64371cf0a243a52706e4f7b9d7b031416892c5cd3f62f3fda2d52725a6|
2017-07-02 08:01:24|install|libgstbadbase-1_0-0|1.12.1-4.4|x86_64||packman|49fb26305ee03882bc942bb5294933185fdaf979edeaffb1c2447d7781bcae70|
2017-07-02 08:01:25|install|libgstbasecamerabinsrc-1_0-0|1.12.1-4.4|x86_64||packman|99e851ca6f12a2d787692d1019a78a341c086bbca334d988a4ba29f1e03909af|
2017-07-02 08:01:25|install|libgstmpegts-1_0-0|1.12.1-4.4|x86_64||packman|013fc8eafed681f538fac9cbc64642b3a2fe42eb3de4f363988f2cb9158511a2|
2017-07-02 08:01:25|install|libgstwayland-1_0-0|1.12.1-4.4|x86_64||packman|6c0135af228093329f2879e3cc6fc62f702fc7e1714176cd1734da56087fdcc3|
2017-07-02 08:01:25|install|libgsturidownloader-1_0-0|1.12.1-4.4|x86_64||packman|a73aa856ee454fa62789789f88860a4c94a13584158f7b4474a343c4d95056cd|
2017-07-02 08:01:26|install|libgstphotography-1_0-0|1.12.1-4.4|x86_64||packman|c81259453e112b634a3859fd05298022d860de00e5f9801c53901e5969bf7779|
2017-07-02 08:01:27|install|libgstgl-1_0-0|1.12.1-4.4|x86_64||packman|b426b4a1fdc39220745938aab2baad51b6e745448a4cd3705368abe1b6f0b941|
2017-07-02 08:01:28|install|handbrake-gtk|1.0.7-1.45|x86_64||packman|751d92875d97d15a8ea0250fa390f0d11c744d3caf318e09f5fa54c7fca3b644|
2017-07-02 08:01:30|install|libgstbadvideo-1_0-0|1.12.1-4.4|x86_64||packman|06399a17d86c8ca32fbba3cc2e17a42e4f7dfc2f38fa4012516a10730f90e965|
2017-07-02 08:01:30|install|libgstbadaudio-1_0-0|1.12.1-4.4|x86_64||packman|205994b5899117bf0efa846f4d13219cb59f6077a1356cc747dd04ace75be94d|
2017-07-02 08:01:30|install|libgstadaptivedemux-1_0-0|1.12.1-4.4|x86_64||packman|ee7222ad9d9e92dad8d0cff63d5b40be33d27c66d65092bfb01a966cfecfee64|
2017-07-02 08:01:31|install|handbrake-gtk-lang|1.0.7-1.45|noarch||packman|0803abf4d15b2c6eb05ed402a250c1d74a9ad63996057452355c0b6583d084a8|
2017-07-02 08:01:33|install|gstreamer-plugins-bad|1.12.1-4.4|x86_64||packman|3aacdf6763a77f81f21e152565bbaafb6363ebd0d4a9490e21627f71e606b10c|

**iis2800** · 02-Jul-2017, 05:36

I don't know why it happened, but I fixed mine by adding the Google DNS servers

nameserver 8.8.8.8
nameserver 8.8.4.4

to /etc/resolv.conf

A temporary fix, hopefully the problem will be corrected soon.

**Knurpht** · 02-Jul-2017, 05:57

Experienced that too, according to the factory mailing list

netconfig update -f

should fix it. I set the network connection to a static IP, which worked, then put it back to DHCP and it worked again, persistently.

**iis2800** · 02-Jul-2017, 06:04

I tried that, but it didn't work for me, hence the manual DNS settings. I'll try the manual IP/DHCP switch.

**ingogoeppert** · 02-Jul-2017, 06:24

I found out that NetworkManager does not merge the dhclient.conf like before the update. In the dhclient.conf there are default options combined in more than one line:

Code:

# Request several well known/usefull dhcp options.
request subnet-mask, broadcast-address, routers,
    rfc3442-classless-static-routes,
    interface-mtu, host-name, domain-name, domain-search,
    domain-name-servers, nis-domain, nis-servers,
    nds-context, nds-servers, nds-tree-name,
    netbios-name-servers, netbios-dd-server,
    netbios-node-type, netbios-scope, ntp-servers;
#    rfc4833-tz-posix-string, rfc4833-tz-name;

They are missing in the merged config after the update in /var/lib/NetworkManager/dhclient*.conf. If I put all options in one line it works like before and the NetworkManager also requests the nameservers. Bug in the NetworkManager-Parser or the default dhclient.conf file?

**Hans2004** · 02-Jul-2017, 09:08

I have the same problem since today's update. The solutions posted here did not work for me, except setting the DNS ip address manually. Also, I cannot connect to any of my other wifi connections anymore: only the one that I was connected to before the update started still allows me to connect (without DNS of course). If I try to connect to one of my other wifi stations, the laptop silently connects to the original one instead.

**markdd** · 02-Jul-2017, 10:13

Thanks for the tip with /etc/dhclient.conf. That worked.

For configured connections, NM does ask for a password after a while. You can also open the connection editor and reenter the password and save. Then the old connections work again.

**koen_dewitte** · 02-Jul-2017, 10:41

This did the trick for me too. Thank you for your help, ingogoeppert

For people that need more info.

Open a root terminal and edit the file /etc/dhclient.conf
Look for the line "Request several well known/usefull dhcp options."
Next, put all the options on one line, like below.

Code:

# Request several well known/usefull dhcp options.
request subnet-mask, broadcast-address, routers,rfc3442-classless-static-routes,interface-mtu, host-name, domain-name, domain-search,domain-name-servers, nis-domain, nis-servers,nds-context, nds-servers, nds-tree-name,netbios-name-servers, netbios-dd-server,netbios-node-type, netbios-scope, ntp-servers;
#    rfc4833-tz-posix-string, rfc4833-tz-name;

save the file and restart networkmanager

Code:

systemctl restart NetworkManager

Originally Posted by ingogoeppert

I found out that NetworkManager does not merge the dhclient.conf like before the update. In the dhclient.conf there are default options combined in more than one line:

Code:

# Request several well known/usefull dhcp options.
request subnet-mask, broadcast-address, routers,
    rfc3442-classless-static-routes,
    interface-mtu, host-name, domain-name, domain-search,
    domain-name-servers, nis-domain, nis-servers,
    nds-context, nds-servers, nds-tree-name,
    netbios-name-servers, netbios-dd-server,
    netbios-node-type, netbios-scope, ntp-servers;
#    rfc4833-tz-posix-string, rfc4833-tz-name;

They are missing in the merged config after the update in /var/lib/NetworkManager/dhclient*.conf. If I put all options in one line it works like before and the NetworkManager also requests the nameservers. Bug in the NetworkManager-Parser or the default dhclient.conf file?

**hendwolt** · 02-Jul-2017, 11:39

I opened a bug report for the resolv.conf problem:
https://bugzilla.opensuse.org/show_bug.cgi?id=1046969
And Andrei Borzenkov put a link to this thread into it.

**labouie** · 02-Jul-2017, 19:43

Many thanks to everyone on this thread for your assistance. I was having this issue as well and couldn't figure out why. I could connect to my router and my NAS but not the internet. This step by step solution fixed my issue.

Originally Posted by koen_dewitte

This did the trick for me too. Thank you for your help, ingogoeppert

For people that need more info.

Open a root terminal and edit the file /etc/dhclient.conf
Look for the line "Request several well known/usefull dhcp options."
Next, put all the options on one line, like below.

Code:

# Request several well known/usefull dhcp options.
request subnet-mask, broadcast-address, routers,rfc3442-classless-static-routes,interface-mtu, host-name, domain-name, domain-search,domain-name-servers, nis-domain, nis-servers,nds-context, nds-servers, nds-tree-name,netbios-name-servers, netbios-dd-server,netbios-node-type, netbios-scope, ntp-servers;
#    rfc4833-tz-posix-string, rfc4833-tz-name;

save the file and restart networkmanager

Code: