Merge pull request #6283

a84131ce p2p: fix off by one adding fallback peers (moneromooo-monero)

src/p2p/net_node.inl

@@ -1552,14 +1552,14 @@ namespace nodetool
           if (!m_fallback_seed_nodes_added)
           {
             MWARNING("Failed to connect to any of seed peers, trying fallback seeds");
-            current_index = m_seed_nodes.size();
+            current_index = m_seed_nodes.size() - 1;
             for (const auto &peer: get_seed_nodes(m_nettype))
             {
               MDEBUG("Fallback seed node: " << peer);
               append_net_address(m_seed_nodes, peer, cryptonote::get_config(m_nettype).P2P_DEFAULT_PORT);
             }
             m_fallback_seed_nodes_added = true;
-            if (current_index == m_seed_nodes.size())
+            if (current_index == m_seed_nodes.size() - 1)
             {
               MWARNING("No fallback seeds, continuing without seeds");
               break;