1. Goal
Validate IPv6 addresses, gateway, and DNS resolution with standard system tools.
2. Files and components involved
/sbin/ip
/etc/resolv.conf
/etc/rc.d/rc.inet1.conf3. Operational flow
ip -6 addr show dev eth0
ip -6 route add default via gateway dev eth0
update resolv.conf with IPv6 resolver4. Operational verification
ip -6 route show
ping6 resolver
ping6 public host
host -t AAAA openai.com5. Practical notes
Apply network changes from a local console or with an emergency session ready, so you do not lose SSH access.
Every network change should have a rollback path ready: a second console, KVM access, or a temporary command to remove.
Quick checklist
[ ] Backup or copy of the existing configuration completed
[ ] Files and commands updated as expected
[ ] Local test completed successfully
[ ] Logs or final output verified
[ ] Rollback procedure documented