How to ping an Oracle RAC intance through the RAC private interface with specific MTU

Some times it is interesting to check that the Oracle private network interface support a specific MTU.
Use the ping cmmand like following :
On Linux system :

/bin/ping -s <MTU> -c 2 -I <private_source_ip> <remote_nodename_priv> 

/bin/traceroute -s <private_source_ip> -r -F  <remote_nodename_priv> <MTU>

On Solaris system :

/usr/sbin/ping -i <private_source_ip> -s <remote_nodename_priv> <MTU>

/usr/sbin/traceroute -s <private_source_ip> -r -F <remote_nodename_priv> <MTU>