Disable Network Router Discovery Daemon (rdisc) The 'rdisc' service implements the client side of the ICMP Internet Router Discovery Protocol (IRDP), which allows discovery of routers on the local subnet. If a router is discovered then the local routing table is updated with a corresponding default route. By default this daemon is disabled. The 'rdisc' service can be disabled with the following command: '$ sudo systemctl disable rdisc'

General-purpose systems typically have their network and routing information configured statically by a system administrator. Workstations or some special-purpose systems often use DHCP (instead of IRDP) to retrieve dynamic network configuration information. Fix: # # Disable rdisc.service for all systemd targets # systemctl disable rdisc.service # # Stop rdisc.service if currently running # systemctl stop rdisc.service