-- Proxy headers and IP forward mode for clients, tunnels, hosts ALTER TABLE clients ADD COLUMN ip_forward_mode TEXT DEFAULT 'real'; ALTER TABLE clients ADD COLUMN custom_headers TEXT DEFAULT ''; ALTER TABLE tunnels ADD COLUMN ip_forward_mode TEXT DEFAULT 'real'; ALTER TABLE tunnels ADD COLUMN custom_headers TEXT DEFAULT ''; ALTER TABLE hosts ADD COLUMN ip_forward_mode TEXT DEFAULT 'real'; ALTER TABLE hosts ADD COLUMN custom_headers TEXT DEFAULT '';