Show system information Show IPv4 information Show IP multicast group membership netstat -gn4 Show IP routes Show kernel route cache ip -s route list cache Show kernel route cache for a given route <x.x.x.x> <x.x.x.x/x> ip -s route list cache $5 Show kernel route table ip route list Show kernel route table for a given route <x.x.x.x> <x.x.x.x/x> ip -s route list $5 Reset a service Reset Internet Protocol (IP) parameters Reset Address Resolution Protocol (ARP) cache Reset ARP cache for an IPv4 address <x.x.x.x> sudo /sbin/ip neigh flush to "$5" Reset ARP cache for interface sudo /sbin/ip neigh flush dev "$5" Reset IP route Flush the kernel route cache sudo /sbin/ip route flush cache Flush the kernel route cache for a given route <x.x.x.x> <x.x.x.x/x> sudo /sbin/ip route flush cache "$5"