Live run on 5 vless nodes (3 instances, one per mode): round_robin rotates strictly
across the live set and skips dead nodes; both sticky strategies pin deterministically;
bad config is rejected at start; -race clean on units and live. Feature is now
device-verified, not just isolated.
The run surfaced a config caveat (not a bug, by design): dest_ip is empty until the
destination is resolved, so a sticky key of only source_ip/dest_ip/dest_port collapses
to "" for domain traffic and pins everything to one node. Documented in urltest.md —
use `domain` in `hash` for domain-based traffic.
Leadaxe
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