Problem c:

Consider the scenario below in which three hosts, with private IP addresses $10\mathrm{.}0\mathrm{.}1\mathrm{.}13,10\mathrm{.}0\mathrm{.}1\mathrm{.}16,10\mathrm{.}0\mathrm{.}1\mathrm{.}21$ are in a local network behind a NAT'd router that sits between these three hosts and the larger Internet. IP datagrams being sent from, or destined to$,$ these three hosts must pass through this NAT router. The router's interface on the LAN side has IP address $10\mathrm{.}0\mathrm{.}1\mathrm{.}25,$ while the router's address on the internet side has IP address $135\mathrm{.}122\mathrm{.}198\mathrm{.}212.$ Answer the following questions $[1$ point each$]$

Assume that host with IP $10\mathrm{.}0\mathrm{.}1\mathrm{.}21$ is sending a packet to a remote host With ip $128\mathrm{.}119\mathrm{.}160\mathrm{.}183.$ Answer the following questions:

Consider the datagram at step $1,$ after it has been sent by the host but before it has reached the router. What is the source IP address for this datagram?

At step $1,$ what is the destination IP address?

Now consider the datagram at step $2,$ after it has been transmitted by the router: What is the source IP address for this datagram?

A$,$ Will the source port have changed? Yes or No$.$

$5.$ At step $3,$ What is the destination IP address for this datagram?

$6.$ Last, consider the datasram at step $4,$ after it has been transmited by the router but before it has been recelved by the host, What is the source IP address for this datagram?

$7.$ At step A$,$ what is the destination IP address for this datagiam