I still have this problem. When I disconnect from a VPN, the various resolv files retain a search line and DNS lookup fails for the domain associated with the VPN (in this case, my university). Luckily, this is fairly easy to work around (I no longer reboot to try to fix my network). Did I miss something? Or has the fix been committed, but not yet propagated out into a new systemd package in the repos? The post above seems to indicate that the version 234-2ubuntu12 and above would have the fix. I have 234-2ubuntu12.2 which I presume is newer.
here's output from dpkg-query -s systemd: fanslow@sano:~$ dpkg-query -s systemd Package: systemd Status: install ok installed Priority: important Section: admin Installed-Size: 11704 Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com> Architecture: amd64 Multi-Arch: foreign Version: 234-2ubuntu12.2 Replaces: udev (<< 228-5) Depends: libacl1 (>= 2.2.51-8), libapparmor1 (>= 2.9.0-3+exp2), libaudit1 (>= 1:2.2.1), libblkid1 (>= 2.19.1), libc6 (>= 2.25), libcap2 (>= 1:2.10), libcryptsetup4 (>= 2:1.4.3), libgcrypt20 (>= 1.7.0), libgpg-error0 (>= 1.14), libidn11 (>= 1.13), libip4tc0 (>= 1.6.0+snapshot20161117), libkmod2 (>= 5~), liblz4-1 (>= 0.0~r130), liblzma5 (>= 5.1.1alpha+20120614), libmount1 (>= 2.26.2), libpam0g (>= 0.99.7.1), libseccomp2 (>= 2.3.1), libselinux1 (>= 2.1.9), libsystemd0 (= 234-2ubuntu12.2), util-linux (>= 2.27.1), mount (>= 2.26), adduser, procps Pre-Depends: libc6 (>= 2.8) Recommends: libpam-systemd, dbus Suggests: systemd-container, policykit-1 Breaks: apparmor (<< 2.9.2-1), ifupdown (<< 0.8.5~), laptop-mode-tools (<< 1.68~), systemd-shim (<< 10-3~), udev (<< 228-5) Conffiles: /etc/dhcp/dhclient-enter-hooks.d/resolved 17323c120a8bb9f8453c24b43d900203 /etc/dhcp/dhclient-exit-hooks.d/timesyncd a891f21f45b0648b7082d999bf424591 /etc/pam.d/systemd-user 3d97692a0125712fcfbd7ddf756f7696 /etc/systemd/journald.conf b89a22c219efce8b3700feafc61e0c18 /etc/systemd/logind.conf aeeac805b4bfb7450183ce346999dd38 /etc/systemd/resolved.conf cda783b1a7bc2e01f2268b9df3c71934 /etc/systemd/system.conf adc308320471c75a60e07184cf2ebb05 /etc/systemd/timesyncd.conf 4e1cf2b5f85dff6c1f186135b9f66a85 /etc/systemd/user.conf 675370e2d80a4ad957202e68c1b4aaee Description: system and service manager systemd is a system and service manager for Linux. It provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic. . systemd is compatible with SysV and LSB init scripts and can work as a drop-in replacement for sysvinit. . Installing the systemd package will not switch your init system unless you boot with init=/bin/systemd or install systemd-sysv in addition. Homepage: https://www.freedesktop.org/wiki/Software/systemd Original-Maintainer: Debian systemd Maintainers <pkg-systemd-maintain...@lists.alioth.debian.org> -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1717995 Title: extra domains not removed from resolv.conf when VPN disconnects Status in systemd package in Ubuntu: Fix Released Bug description: I use a VPN (network manager "vpnc" config) to connect to my work network. The gateway is "webvpn.purestorage.com". When I connect, I get "purestorage.com" added to the "search" line in my /etc/resolv.conf (and /run/resolvconf/interface/systemd-resolved) - which makes perfect sense, the VPN passes this info to me and then I can connect to systems within the work network without having to use a FQDN. The bug (which is a regression from older versions of Ubuntu) is that when I lose my connection to the VPN (either because I disconnect explicitly, or because the network goes down or I suspend my laptop), the "purestorage.com" domain is not removed from those "search" lines. And for some reason this prevents me from resolving webvpn.purestorage.com (which prevents me from reconnecting to the VPN). In particular, if I connect and disconnect my VPN, I get: $ systemd-resolve webvpn.purestorage.com webvpn.purestorage.com: resolve call failed: No appropriate name servers or networks for name found If I then edit /etc/resolv.conf by hand to remove all the purestorage.com entries from the search line - in other words, change $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN # 127.0.0.53 is the systemd-resolved stub resolver. # run "systemd-resolve --status" to see details about the actual nameservers. nameserver 127.0.0.53 search home.digitalvampire.org purestorage.com dev.purestorage.com to $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN # 127.0.0.53 is the systemd-resolved stub resolver. # run "systemd-resolve --status" to see details about the actual nameservers. nameserver 127.0.0.53 search home.digitalvampire.org and change nothing else, then: $ systemd-resolve webvpn.purestorage.com webvpn.purestorage.com: 192.30.189.1 (vpn.purestorage.com) -- Information acquired via protocol DNS in 25.9ms. -- Data is authenticated: no I'm not sure if the bug is in systemd, network manager, or some other package, but I'm happy to try any debugging that is helpful to resolve this (no pun intended). ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: systemd 234-2ubuntu10 ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10 Uname: Linux 4.12.0-13-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: GNOME Date: Mon Sep 18 11:20:17 2017 InstallationDate: Installed on 2016-09-01 (381 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160901) MachineType: LENOVO 20FRS2FK00 ProcEnviron: TERM=screen PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.12.0-13-generic root=UUID=30d5ada5-835d-4cf7-96cf-3329c0316107 ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: Upgraded to artful on 2017-07-26 (53 days ago) dmi.bios.date: 07/13/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET53W (1.27 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FRS2FK00 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET53W(1.27):bd07/13/2017:svnLENOVO:pn20FRS2FK00:pvrThinkPadX1Yoga1st:rvnLENOVO:rn20FRS2FK00:rvrSDK0J40697WIN:cvnLENOVO:ct31:cvrNone: dmi.product.family: ThinkPad X1 Yoga 1st dmi.product.name: 20FRS2FK00 dmi.product.version: ThinkPad X1 Yoga 1st dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1717995/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
