LatticeLattice

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UDP VIP

Relays point at one address. Health-check HTTP /readyz. Round-robin is fine.

Relays should list the VIP, not each dhcpd. Discover may land on A and Request on B; the lease store is the database.

  • HAProxy 3.x UDP — deploy/haproxy/dhcp.cfg in the product repo. Check port 8080 (/readyz).
  • keepalived + IPVS — if HAProxy has no mode udp. LVS rr or sh.
  • Anycast — withdraw the route when /readyz fails.

Trusted relays: LATTICE_TRUSTED_RELAYS comma-separated IPs or CIDRs. Empty = allow all (lab only). See Relays.