diff --git a/net/eth.c b/net/eth.c
index f913e4396f..c8babfa682 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -419,7 +419,7 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags,
         }
 
         bytes_read = iov_to_buf(pkt, pkt_frags,
-                                rthdr_offset + sizeof(*ext_hdr),
+                                rthdr_offset + sizeof(*rthdr),
                                 dst_addr, sizeof(*dst_addr));
 
         return bytes_read == sizeof(*dst_addr);