: This interface supports broad- and multicasting, and the interface is UP (operational and connected).The “en” stands for ethernet, “p0” is the bus number of the ethernet card, and “s3” is the slot number. enp0s3: The network interface name as a string.The physical interface is more interesting, as we’ll show below: inet6: The IP version 6 address, scope, valid_lft, and preferred_lft.This should never be larger than the valid_lft value. For an IP version 4 IP address allocated by DHCP, this is the amount of time the IP address can be used with no restrictions. For an IP version 4 IP address allocated by Dynamic Host Configuration Protocol (DHCP), this is the length of time the IP address is considered valid and able to make and accept connection requests. lo: The interface with which this IP address is associated.This IP address is only valid inside the computer (the “host”). Eight bits set to one represents 255 in binary, so the subnet mask is 255.0.0.0. The part of the address after the forward-slash ( /) is Classless Inter-Domain Routing notation (CIDR) representing the subnet mask. It indicates how many leading contiguous bits are set to one in the subnet mask. The value of eight means eight bits. link/loopback: The media access control (MAC) address of the interface.qlen 1000: The maximum length of the transmission queue. ![]() The default is to place them all in a group called “default.”
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