router_readconfig: don't trigger re-resolving for file-based targets
router_readconfig: don't trigger re-resolving for file-based targets

piotr1212/carbon-c-relay,grobian/carbon-c-relay,piotr1212/carbon-c-relay,grobian/carbon-c-relay,piotr1212/carbon-c-relay,grobian/carbon-c-relay,piotr1212/carbon-c-relay