I recently updated to 19.04 and noticed some change in NetworkManager when using VPNs.
- I want to use a VPN with an own local DNS-server, which is pushed from DHCP
- I have seperate VPN profiles. One for a "full VPN" which installes a default-route to the remote network, and one "split tunnel" profile, having the setting for local resources only enabled
Since i updated to 19.04, NetworkManager seems to only use the pushed DNS server, what means when the default-route is allowed to install (when checkbox "use this connection only for resources on its network") is not checked.
Let NetworkManager install a default route:
~$ resolvectl status tun0 Link 16 (tun0) Current Scopes: DNS DefaultRoute setting: yes LLMNR setting: yes MulticastDNS setting: no DNSOverTLS setting: no DNSSEC setting: no DNSSEC supported: no Current DNS Server: 192.168.1.1 DNS Servers: 192.168.1.1 DNS Domain: local.domain
activate checkbox for local resources only in the same vpn profile:
~$ resolvectl status tun0 Link 8 (tun0) Current Scopes: none DefaultRoute setting: no LLMNR setting: yes MulticastDNS setting: no DNSOverTLS setting: no DNSSEC setting: no DNSSEC supported: no
This setting was working independently from default-route-setting before, seems like it changed with new 19.04 NetworkManager (v1.16.0). Can anyone confirm?
Edit: This is a desktop installation. Here are some details:
~$ ls -al /etc/resolv.conf lrwxrwxrwx 1 root root 39 Apr 20 15:41 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf ~$ cat /etc/resolv.conf # This file is managed by man:systemd-resolved(8). Do not edit. # # This is a dynamic resolv.conf file for connecting local clients to the # internal DNS stub resolver of systemd-resolved. This file lists all # configured search domains. # # Run "resolvectl status" to see details about the uplink DNS servers # currently in use. # # Third party programs must not access this file directly, but only through the # symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way, # replace this symlink by a static file or a different symlink. # # See man:systemd-resolved.service(8) for details about the supported modes of # operation for /etc/resolv.conf. nameserver 127.0.0.53 options edns0 search uman.enbw.net ~$ cat /etc/network/interfaces # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback ~$ cat /etc/netplan/*.yaml # Let NetworkManager manage all devices on this system network: version: 2 renderer: NetworkManager