October 2001
Beginner
1024 pages
25h 8m
English
Content preview from FreeBSD® UnleashedBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Creating IP Aliases
There's nothing to stop you from assigning as many IP addresses as you want to an Ethernet card. Recalling our discussion of ARP from the previous chapter, a new TCP/IP connection looks up a LAN host by its IP address, asking for the MAC address of whatever Ethernet interface has that IP address. It doesn't do the reverse. One MAC address can answer for many different IP addresses, but one IP address can't be assigned to multiple Ethernet cards without errors and collisions resulting.
The way to assign multiple IP addresses to a single card is through IP aliasing. As with the route command, every platform does aliasing slightly differently; syntax varies from system to system. On FreeBSD, alias is used as a keyword to ifconfig ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.