I will try if I can do something because my C program skills are not the best but then I cannot promise you how fast I can provide the patch. Regards Matthias -----Urspr?ngliche Nachricht----- Von: Nikos Mavrogiannopoulos [mailto:n.mavrogiannopoulos at gmail.com] Gesendet: Samstag, 5. M?rz 2016 13:22 An: Matthias Mandlmeier <matthias.mandlmeier at online.de> Cc: 'openconnect-devel' <openconnect-devel at lists.infradead.org> Betreff: Re: AW: AW: AW: Read Client Hostname On Sat, 2016-03-05 at 13:07 +0100, Matthias Mandlmeier wrote: > Nsupdate will work with my server. I can try to create a patch for > this but then I need to know where the variables are set in the > sources that I can trigger the hostname and send it to Bind. Most likely you need to modify config.c (and ocserv-args.def) to add new config file variables. The update should be triggered at main -worker.c when the CMD_SESSION_INFO message is received by main which contains the hostname. regards, Nikos