diff --git a/net/core/dev.c b/net/core/dev.c
index 8f9710c62e20d58bcdcec3d184ca6344fbe5a57c..962ee9d719641291853715f366717bf1626e115c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -946,7 +946,7 @@ bool dev_valid_name(const char *name)
 		return false;
 
 	while (*name) {
-		if (*name == '/' || isspace(*name))
+		if (*name == '/' || *name == ':' || isspace(*name))
 			return false;
 		name++;
 	}