Only error when target network list is not reachable

examples/forgejo.yml

@@ -67,7 +67,7 @@ networks:
     - url: https://help.qwant.com/wp-content/uploads/sites/2/2025/01/qwantbot.json
       jq-path: '(.prefixes[] | select(has("ipv4Prefix")) | .ipv4Prefix), (.prefixes[] | select(has("ipv6Prefix")) | .ipv6Prefix)'
   duckduckbot:
-    - url: https://duckduckgo.com/duckduckgo-help-pages/results/duckduckbot/
+    - url: https://duckduckgo.com/duckduckgo-help-pages/results/duckduckbot
       regex: "<li>(?P<prefix>[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)</li>"
   yandexbot:
     # todo: detected as bot

lib/state.go

@@ -189,7 +189,8 @@ func NewState(p policy.Policy, settings StateSettings) (handler http.Handler, er
 			}
 			prefixes, err := e.FetchPrefixes(state.Client)
 			if err != nil {
-				return nil, fmt.Errorf("networks %s: error fetching prefixes: %v", k, err)
+				slog.Error("error fetching network url list", "network", k, "url", *e.Url)
+				continue
 			}
 			for _, prefix := range prefixes {
 				err = ranger.Insert(cidranger.NewBasicRangerEntry(prefix))