Please write a code snippet to spoof an ARP reply message, with the goal of poisoning the ARP cache of the machine $10\mathrm{.}8\mathrm{.}8\mathrm{.}5.$ Your attack machine is on the same LAN. Fill up the following code along with comments.

# Construct the Ether header

ether $=$ Ether$()$

ether.dst $=$

ether.src $=$

# Construct the ARP packet

arp $=$ ARP$()$

arp.hwsrc $=$

arp.psrc $=$

arp.hwdst $=$

arp.pdst $=$

arp.op $=1$

frame $=$ ether$/$arp

sendp$($frame$)$