diff --git a/vppcfg/config/interface.py b/vppcfg/config/interface.py
index f3e9a44..e3d097d 100644
--- a/vppcfg/config/interface.py
+++ b/vppcfg/config/interface.py
@@ -555,10 +555,10 @@ def validate_interfaces(yaml):
                     result = False
                 if not address.is_canonical(addr):
                     canonical = address.get_canonical(addr)
-                    msgs.append(
-                        f"interface {ifname} IP address {addr} is not canonical, use {canonical}"
+                    logger.warning(
+                        f"interface {ifname} IP address {addr} is not canonical, using {canonical}"
                     )
-                    result = False
+                    iface["addresses"][iface["addresses"].index(addr)] = canonical
 
         if "l2xc" in iface:
             if has_sub(yaml, ifname):
diff --git a/vppcfg/config/loopback.py b/vppcfg/config/loopback.py
index ed0018e..cba1bc8 100644
--- a/vppcfg/config/loopback.py
+++ b/vppcfg/config/loopback.py
@@ -137,10 +137,10 @@ def validate_loopbacks(yaml):
                     result = False
                 if not address.is_canonical(addr):
                     canonical = address.get_canonical(addr)
-                    msgs.append(
-                        f"loopback {ifname} IP address {addr} is not canonical, use {canonical}"
+                    logger.warning(
+                        f"loopback {ifname} IP address {addr} is not canonical, using {canonical}"
                     )
-                    result = False
+                    iface["addresses"][iface["addresses"].index(addr)] = canonical
         if "mac" in iface and mac.is_multicast(iface["mac"]):
             msgs.append(
                 f"loopback {ifname} MAC address {iface['mac']} cannot be multicast"
diff --git a/vppcfg/unittest/yaml/error-address1.yaml b/vppcfg/unittest/yaml/error-address1.yaml
index b9645bd..2cadda4 100644
--- a/vppcfg/unittest/yaml/error-address1.yaml
+++ b/vppcfg/unittest/yaml/error-address1.yaml
@@ -5,8 +5,7 @@ test:
       - "interface .* IP address .* conflicts with another"
       - "sub-interface .* IP address .* conflicts with another"
       - "loopback .* IP address .* conflicts with another"
-      - "interface .* IP address .* is not canonical, use .*"
-    count: 15
+    count: 14
 ---
 interfaces:
   GigabitEthernet1/0/0: