Re: how to pass env var to vpnc plugin

[Thomas Haller <thaller redhat com>]

On Sat, 2019-10-12 at 11:03 +0200, Martin Koller wrote:
> Is there somewhere documentation on how I can set an env var which
> shall be passed
> to the vpnc plugin when activating a VPN connection ?
> In nm-vpnc-service-vpnc-helper.c I found
>       tmp = getenv ("INTERNAL_IP4_MTU");
> which should allow me to change the MTU since I can not configure the
> MTU via the NM settings.


Hi,

it's not intended that you set environment variables that way.

Of course, you can replace 

  /usr/libexec/nm-vpnc-service-vpnc-helper

with a wrapper script and set it there.

You may also replace one of 

  /usr/libexec/nm-vpnc-service
  /usr/sbin/vpnc

if that suits you better.



You could also set the MTU via a dispatcher script instead. See `man
NetworkManager`. Either way, it's not nice.


best,
Thomas

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