Excellent point Christof. I'll pass this comment to the relevant people for review. Thanks.
Original Message:
Sent: Thu February 12, 2026 03:03 AM
From: Christof Schwab
Subject: PowerVM/VIOS hostname resolution
Hello Anas
in the IBM provided VIOS base images, /etc/netsvc.conf contains "hosts=local4,bind4". Would it not make sense to change it to "hosts=local,bind4", as default?
Christof
------------------------------
Christof
Original Message:
Sent: Wed February 11, 2026 12:54 AM
From: Anas AlSaleh
Subject: PowerVM/VIOS hostname resolution
Dear All
Sharing a useful reference on hostname resolution behavior in PowerVM/VIOS environments.
This article explains the /etc/netsvc.conf resolver options (local, bind4, local6, etc.), how IPv4/IPv6 qualifiers impact resolution, and why hosts=local,bind4 is typically the recommended default for most VIOS deployments.
PowerVM/VIOS: Understanding hostname resolution options (local,bind4/local4,bind4/local,bind/local6,bind6)
| Ibm |
remove preview |
|
| PowerVM/VIOS: Understanding hostname resolution options (local,bind4/local4,bind4/local,bind/local6,bind6) |
| Virtual I/O Server (VIOS) relies heavily on hostname resolution during system startup and for the operation of internal components such as change manager, CMDB, clustering services, and local databases.Incorrect resolver configuration in /etc/netsvc.conf can lead to hostname resolution failures that impact internal VIOS services, even when external network connectivity appears healthy.This technote explains how hostname resolution works on VIOS, describes the available resolver options, and provides clear guidance on selecting the appropriate configuration for common environments. |
| View this on Ibm > |
|
|
------------------------------
Anas AlSaleh
IBM Power Systems Software Specialist
Saudi Business Machines ( SBM )
Riyadh
------------------------------