Description of problem:

After a successful connection the nameservers provided by the VPN gateway are ending up in /etc/strongswan/resolv.conf instead of /etc/resolv.conf. In this way the nameserver information of the vpn gateway gets lost.


Version-Release number of selected component (if applicable):

5.3.2


How reproducible:

Steps to Reproduce:
1. cat /etc/resolv.conf 
2. Create a connection to a VPN gateway which provides some nameserver information for the connection.
3. cat /etc/resolv.conf 
4. cat /etc/strongswan/resolv.conf 


Actual results:

In step 1.) the resolv.conf file contains the initial nameservers for a network connection. The resolv.conf in step 3.) is the same as in step 1.).
The nameservers obtained from the VPN gateway are visible in step 4.)


Expected results:

The nameservers in /etc/strongswan/resolv.conf should prepend the nameservers in step 1.)


Additional info:

This was already reported by Robert Dyck to the upstream.

https://wiki.strongswan.org/issues/1147

There is also a discussion about the bugfix there.


I chose to edit the /etc/strongswan/strongswan.d/charon/resolv.conf file and erased the comment from the "file = ..." option like shown below.

===
resolve {

    # File where to add DNS server entries.
    file = /etc/resolv.conf

    # Whether to load the plugin. Can also be an integer to increase the
    # priority of this plugin.
    load = yes

    resolvconf {

        # Prefix used for interface names sent to resolvconf(8).
        # iface_prefix = lo.inet.ipsec.

    }

}
===