diff --git a/net_gen/src/iff.rs b/net_gen/src/iff.rs
index 4a9e6a773..f327b66d0 100644
--- a/net_gen/src/iff.rs
+++ b/net_gen/src/iff.rs
@@ -1187,6 +1187,7 @@ pub struct ifreq {
 
 impl Default for ifreq {
     fn default() -> Self {
+        // SAFETY: all zeros is a valid pattern for this data type
         unsafe { std::mem::zeroed() }
     }
 }