On 29.01.19 20:37, Ralf Prengel wrote: > thanks but this doesn t work here allthough most tips and hints are using this parameter. No idea. My CentOS7 installation sends the hostname to the (ISC) DHCP server. > Any idea how to debug ? tcpdump is your friend. Best regards Ulf _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos