Hello, I am using the vpnc-script from here: http://git.infradead.org/users/dwmw2/vpnc-scripts.git/blob/HEAD:/vpnc-script Everything works fine except that my /etc/resolv.conf gets overwritten after a few minutes, because of RDNSS options in Router Advertisements which I get on my ethernet interface. Since this setup can lead to leaking DNS traffic, I think this should not be the default behavior. As a fix I propose to call resolvconf with the -x flag to set the interface as exclusive. Diff: --- vpnc-script.orig 2016-10-03 17:09:43.569638541 +0200 +++ vpnc-script 2016-10-03 17:10:26.705637769 +0200 @@ -569,7 +569,7 @@ NEW_RESOLVCONF="$NEW_RESOLVCONF domain $CISCO_DEF_DOMAIN" fi - echo "$NEW_RESOLVCONF" | /sbin/resolvconf -a $TUNDEV + echo "$NEW_RESOLVCONF" | /sbin/resolvconf -x -a $TUNDEV } restore_resolvconf_manager() { Please tell me if I am missing something here. Signed-off-by: Johannes Brechtmann <johannes.brechtmann at gmail.com>