[ocicat]

Originally Posted by Shredder

How do I avoid this and set the IP addresses of the LAN and default gateway permanently?

• IP address assignment can be set in your hostname.if(5) file. Given a rl(4) NIC, you will need to create the file /etc/hostname.rl0. This is also discussed in Section 6.2.1 of the FAQ:
  
  http://openbsd.org/faq/faq6.html#Setup.if
  
• Setting the default router can be done in /etc/mygate. See the manpage for mygate(5) & Section 6.2.2 of the FAQ for more information:
  
  http://openbsd.org/faq/faq6.html#Setup.gateway

As someone new to OpenBSD, you will save yourself a significant amount of time & aggravation by taking the time now to study the FAQ for all kinds of information concerning configuration & usage.