Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Slackware This Forum is for the discussion of Slackware Linux.


  Search this Thread
Old 05-01-2014, 01:41 PM   #1
Registered: Sep 2009
Distribution: Slackware 14.1
Posts: 106

Rep: Reputation: 20
Two ethernet cards

Hi all. I've a couple of questions to throw your way. First, I've been running my own email and web server for 19 years at the university here using Slackware. In the beginning I had no choice of name for the machine but now I do and I'd like to change it. The problem is that if I do this then my email addresses and web pages will suddenly disappear. So, my thought was to add a second card and register it with the uni IT folks with a name of my choosing. Finally, my questions. Will this effectively present two machines to the world from one server? Will email sent to either name work? Same for web stuff. Are there any gotcha's that I should look for? If this will work then I can phase out the old name over, say, a year and then mothball it.
Old 05-01-2014, 05:16 PM   #2
Senior Member
Registered: Feb 2011
Location: Massachusetts, USA
Distribution: CentOS 6 (pre-systemd)
Posts: 2,839

Rep: Reputation: 756Reputation: 756Reputation: 756Reputation: 756Reputation: 756Reputation: 756Reputation: 756
If you are adding the card in order to register a second MAC address and obtain a second IP it will not work. You cannot easily have two ports on the same ethernet subnet. For the reason why, look at the routing table. Only one port will be used for any given destination.

Simpler is to just change DNS to the new name and add a CNAME (alias) for the old name. That way all lookups will find you for either name.
Old 05-01-2014, 06:22 PM   #3
Registered: Sep 2009
Distribution: Slackware 14.1
Posts: 106

Original Poster
Rep: Reputation: 20
Thanks, Smallpond. I guess that's the route (pun intended) that I'll take with IT.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Two Ethernet Cards webwolf70 Linux - Networking 9 04-15-2005 01:20 PM
2 ethernet cards.. Nyybai Slackware 8 04-12-2004 12:49 PM
2 Ethernet Cards matt80 Linux - Networking 14 12-01-2003 04:19 PM
Old ethernet cards rsbecker007 Linux - Networking 1 07-31-2002 11:21 PM
Ethernet Cards and Sound Cards SchizoIV Linux - Newbie 2 07-05-2002 10:10 PM > Forums > Linux Forums > Linux - Distributions > Slackware

All times are GMT -5. The time now is 02:33 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration