diff --git a/src/interfaces/node.h b/src/interfaces/node.h
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -112,7 +112,10 @@
     //! Unban node.
     virtual bool unban(const CSubNet &ip) = 0;
 
-    //! Disconnect node.
+    //! Disconnect node by address.
+    virtual bool disconnect(const CNetAddr &net_addr) = 0;
+
+    //! Disconnect node by id.
     virtual bool disconnect(NodeId id) = 0;
 
     //! Get total bytes recv.
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -152,6 +152,12 @@
             }
             return false;
         }
+        bool disconnect(const CNetAddr &net_addr) override {
+            if (g_connman) {
+                return g_connman->DisconnectNode(net_addr);
+            }
+            return false;
+        }
         bool disconnect(NodeId id) override {
             if (g_connman) {
                 return g_connman->DisconnectNode(id);
diff --git a/src/net.h b/src/net.h
--- a/src/net.h
+++ b/src/net.h
@@ -282,6 +282,8 @@
     size_t GetNodeCount(NumConnections num);
     void GetNodeStats(std::vector<CNodeStats> &vstats);
     bool DisconnectNode(const std::string &node);
+    bool DisconnectNode(const CSubNet &subnet);
+    bool DisconnectNode(const CNetAddr &addr);
     bool DisconnectNode(NodeId id);
 
     ServiceFlags GetLocalServices() const;
diff --git a/src/net.cpp b/src/net.cpp
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -575,15 +575,6 @@
         clientInterface->BannedListChanged();
     }
 
-    {
-        LOCK(cs_vNodes);
-        for (CNode *pnode : vNodes) {
-            if (subNet.Match(static_cast<CNetAddr>(pnode->addr))) {
-                pnode->fDisconnect = true;
-            }
-        }
-    }
-
     if (banReason == BanReasonManuallyAdded) {
         // Store banlist to disk immediately if user requested ban.
         DumpBanlist();
@@ -2733,6 +2724,23 @@
     }
     return false;
 }
+
+bool CConnman::DisconnectNode(const CSubNet &subnet) {
+    bool disconnected = false;
+    LOCK(cs_vNodes);
+    for (CNode *pnode : vNodes) {
+        if (subnet.Match(pnode->addr)) {
+            pnode->fDisconnect = true;
+            disconnected = true;
+        }
+    }
+    return disconnected;
+}
+
+bool CConnman::DisconnectNode(const CNetAddr &addr) {
+    return DisconnectNode(CSubNet(addr));
+}
+
 bool CConnman::DisconnectNode(NodeId id) {
     LOCK(cs_vNodes);
     for (CNode *pnode : vNodes) {
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -3402,14 +3402,15 @@
         } else if (pnode->m_manual_connection) {
             LogPrintf("Warning: not punishing manually-connected peer %s!\n",
                       pnode->addr.ToString());
-        } else {
+        } else if (pnode->addr.IsLocal()) {
+            // Disconnect but don't ban _this_ local node
+            LogPrintf("Warning: disconnecting but not banning local peer %s!\n",
+                      pnode->addr.ToString());
             pnode->fDisconnect = true;
-            if (pnode->addr.IsLocal()) {
-                LogPrintf("Warning: not banning local peer %s!\n",
-                          pnode->addr.ToString());
-            } else {
-                connman->Ban(pnode->addr, BanReasonNodeMisbehaving);
-            }
+        } else {
+            // Disconnect and ban all nodes sharing the address
+            connman->Ban(pnode->addr, BanReasonNodeMisbehaving);
+            connman->DisconnectNode(pnode->addr);
         }
         return true;
     }
@@ -3476,6 +3477,7 @@
 
         // Make sure we ban where that come from for some time.
         connman->Ban(pfrom->addr, BanReasonNodeMisbehaving);
+        connman->DisconnectNode(pfrom->addr);
 
         pfrom->fDisconnect = true;
         return false;
@@ -3508,6 +3510,7 @@
                    hdr.pchChecksum + CMessageHeader::CHECKSUM_SIZE),
             pfrom->GetId());
         connman->Ban(pfrom->addr, BanReasonNodeMisbehaving);
+        connman->DisconnectNode(pfrom->addr);
         return fMoreWork;
     }
 
diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -1390,6 +1390,7 @@
             clientModel->getPeerTableModel()->getNodeStats(detailNodeRow);
         if (stats) {
             m_node.ban(stats->nodeStats.addr, BanReasonManuallyAdded, bantime);
+            m_node.disconnect(stats->nodeStats.addr);
         }
     }
     clearSelectedNode();
diff --git a/src/rpc/net.cpp b/src/rpc/net.cpp
--- a/src/rpc/net.cpp
+++ b/src/rpc/net.cpp
@@ -685,10 +685,13 @@
             absolute = true;
         }
 
-        isSubnet
-            ? g_connman->Ban(subNet, BanReasonManuallyAdded, banTime, absolute)
-            : g_connman->Ban(netAddr, BanReasonManuallyAdded, banTime,
-                             absolute);
+        if (isSubnet) {
+            g_connman->Ban(subNet, BanReasonManuallyAdded, banTime, absolute);
+            g_connman->DisconnectNode(subNet);
+        } else {
+            g_connman->Ban(netAddr, BanReasonManuallyAdded, banTime, absolute);
+            g_connman->DisconnectNode(netAddr);
+        }
     } else if (strCommand == "remove") {
         if (!(isSubnet ? g_connman->Unban(subNet)
                        : g_connman->Unban(netAddr))) {