When querying a website title utilizing the command-line instrument `nslookup`, receiving two totally different IP addresses can point out a couple of situations. This typically happens with the firewall and router software program, pfSense. As an illustration, a dual-WAN setup the place pfSense manages two web connections would return two distinct addresses, every akin to a separate gateway. Alternatively, it would level to a server with a number of community interfaces or a round-robin DNS configuration distributing visitors throughout a number of servers.
Understanding the explanation for twin responses is essential for community administration and troubleshooting. It permits directors to confirm configurations, akin to failover or load balancing. Traditionally, load balancing and redundancy have been vital for making certain service availability. Trendy implementations with software program like pfSense additional improve these capabilities by providing subtle visitors administration. Having perception into the underlying DNS decision helps diagnose potential community points and optimize efficiency.
