2026.07.13

• Changes in v4.5.3
• IP Address Family Proposal:
  • Today, ldmsd sets ai_family=0 (no filter), letting getaddrinfo() resolve to whatever matches — often IPv6 even though many sites disable it. The new default will be IPv4-only, requiring explicit opt-in for IPv6.
  • How to Opt Into IPv6: Users can force IPv6 via -6 (sets hints.ai_family=AF_INET6) or auto-detect via -U (today's behavior) on the command line for ldmsd, ldms_ls, and ldmsd_controller, or via the config command net_family type=[4|6|auto]. With no flag or command, the default becomes IPv4-only (AF_INET).

Slides: https://github.com/ovis-hpc/ovis-wiki/blob/main/LDMS-UG-07-13-2026.pdf