View source for gratiutous ARP with arping

to manually send a gratuitous ARP to the broadcast address, run...

 # arping -U 192.168.100.50 -I eth1 -c 1

if you receive an error...

 bind: Cannot assign requested address

then you need to enable non local ip binding

 # echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind

to make the setting permanent,

 # echo "net.ipv4.ip_nonlocal_bind = 1" >> /etc/sysctl.conf


== links ==


[http://serverfault.com/questions/175803/how-to-broadcast-arp-update-to-all-neighbors-in-linux]

[[category:networking]]