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Question
In linux, in networking, a [...] [...] determines what packets should go to what network interface (e.g. eth0, lo, docker0, etc), based on the destination IP.
Answer

route table

^^ the way things work is when a packet gets to your local machine, the kernel looks up the route table and based on the packet destination IP, determines which network interface to let handle the packet.

^^^ the "route" command prints out the already configured rows of the route table.


Question
In linux, in networking, a [...] [...] determines what packets should go to what network interface (e.g. eth0, lo, docker0, etc), based on the destination IP.
Answer
?

Question
In linux, in networking, a [...] [...] determines what packets should go to what network interface (e.g. eth0, lo, docker0, etc), based on the destination IP.
Answer

route table

^^ the way things work is when a packet gets to your local machine, the kernel looks up the route table and based on the packet destination IP, determines which network interface to let handle the packet.

^^^ the "route" command prints out the already configured rows of the route table.

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25. Introduction to IP
interesting bits, like the 48-bit hardware address of the network card (hex bytes 00:00:E8:3B:2D:A2 ). 25.6 Configuring Routing The interfaces are now active. However, nothing tells the kernel <span>what packets should go to what interface, even though we might expect such behavior to happen on its own. With UNIX, you must explicitly tell the kernel to send particular packets to particular interfaces. Any packet arriving

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