Fixes issue where Telegram fails to send messages when IPv6 is configured
but not functional on the network.
Problem:
- Many networks (especially in Latin America) have IPv6 configured but
not properly routed by ISP/router
- Node.js tries IPv6 first, gets 'Network is unreachable' error
- With autoSelectFamily=false, Node doesn't fallback to IPv4
- Result: All Telegram API calls fail
Solution:
- Change default from false to true for Node.js 22+
- This enables automatic IPv4 fallback when IPv6 fails
- Config option channels.telegram.network.autoSelectFamily still available
for users who need to override
Symptoms fixed:
- Health check: Telegram | WARN | failed (unknown) - fetch failed
- Logs: Network request for 'sendMessage' failed
- Bot receives messages but cannot send replies
Tested on:
- macOS 26.2 (Sequoia)
- Node.js v22.15.0
- OpenClaw 2026.2.12
- Network with IPv6 configured but not routed
