Problem F$.$ Node A wants to start a TCP session with node B$.$ Assume that ARP and DNS entries are all already up$-$to$-$date. Fill in the entries below for two cases. Case $1$: R$1$ is a regular router and Case $2$: When R$1$ is a NAT. List MAC source, MAC destination, IP source, IP destination, TCP source port and TCP destination port for the following. Use addresses of the format A$\text{'}$s IP or R$1,$eth$2$s MAC, etc. A eth$1$ eth$2$ eth$1$ eth$2$ B R$1$ R$2$ Case $1$: When R$1$ is a regular router $($not a NAT$).$ a$.$ For the SYN packet leaving node A$.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port b$.$ For the SYN packet forwarded by R$1.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port c$.$ For the SYN packet forwarded by R$2.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port d$.$ For the SYN ACK sent back by node B$.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port e$.$ For the SYN ACK forwarded by R$2.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port f$.$ For the SYN ACK forwarded by R$1.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port Case $2$: When R$1$ is a NAT. a$.$ For the SYN packet leaving node A$.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port b$.$ For the SYN packet forwarded by R$1.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port c$.$ For the SYN packet forwarded by R$2.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port d$.$ For the SYN ACK sent back by node B$.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port e$.$ For the SYN ACK forwarded by R$2.$ MAC src MAC dest IP src IP dest TCP src port TCP dest port f$.$ For the SYN ACK forwarded by R$1.$ MAC src MAC dest IP src IP dest TCP src port TCP dest por