diff --git a/rosenpass/src/app_server.rs b/rosenpass/src/app_server.rs
index b245c64..c1914fe 100644
--- a/rosenpass/src/app_server.rs
+++ b/rosenpass/src/app_server.rs
@@ -579,16 +579,35 @@ impl AppServer {
                                 })
                                 .ok_or(anyhow::anyhow!("Received message from unknown endpoint"))?
                                 .0;
+
                             let socket_addr = endpoint
                                 .addresses()
                                 .first()
-                                .copied()
                                 .ok_or(anyhow::anyhow!("No socket address for endpoint"))?;
+
+                            let mut len = 0;
+                            let mut ip_addr_port = [0u8; 18];
+
+                            match socket_addr.ip() {
+                                std::net::IpAddr::V4(ipv4) => {
+                                    ip_addr_port[0..4].copy_from_slice(&ipv4.octets());
+                                    len += 4;
+                                }
+                                std::net::IpAddr::V6(ipv6) => {
+                                    ip_addr_port[0..16].copy_from_slice(&ipv6.octets());
+                                    len += 16;
+                                }
+                            };
+
+                            ip_addr_port[len..len + 2]
+                                .copy_from_slice(&socket_addr.port().to_be_bytes());
+                            len += 2;
+
                             self.crypt.handle_msg_under_load(
                                 &rx[..len],
                                 &mut *tx,
                                 PeerPtr(index),
-                                socket_addr,
+                                &ip_addr_port[..len],
                             )
                         }
                         DoSOperation::Normal => self.crypt.handle_msg(&rx[..len], &mut *tx),
diff --git a/rosenpass/src/protocol.rs b/rosenpass/src/protocol.rs
index 54b57f8..17299d6 100644
--- a/rosenpass/src/protocol.rs
+++ b/rosenpass/src/protocol.rs
@@ -82,7 +82,6 @@ use std::collections::hash_map::{
     HashMap,
 };
 use std::convert::Infallible;
-use std::net::{IpAddr, SocketAddr};
 
 // CONSTANTS & SETTINGS //////////////////////////
 
@@ -870,15 +869,16 @@ impl CryptoServer {
         rx_buf: &[u8],
         tx_buf: &mut [u8],
         peer: PeerPtr,
-        socket_addr: SocketAddr,
+        ip_addr_port: &[u8],
     ) -> Result<HandleMsgResult> {
-        //Check cookie value
+        /*
         let mut ip_addr_port = match socket_addr.ip() {
             IpAddr::V4(ipv4) => ipv4.octets().to_vec(),
             IpAddr::V6(ipv6) => ipv6.octets().to_vec(),
         };
 
         ip_addr_port.extend_from_slice(&socket_addr.port().to_be_bytes());
+        */
 
         let (rx_bytes_til_cookie, rx_cookie, rx_mac, rx_sid) = match rx_buf[0].try_into() {
             Ok(MsgType::InitHello) => {
@@ -2154,6 +2154,13 @@ mod test {
             let _ip_b: SocketAddrV4 = "127.0.0.1:8081".parse().unwrap();
 
             let init_hello_len = a.initiate_handshake(PeerPtr(0), &mut *a_to_b_buf).unwrap();
+            let socket_addr_a = std::net::SocketAddr::V4(ip_a);
+            let mut ip_addr_port_a = match socket_addr_a.ip() {
+                std::net::IpAddr::V4(ipv4) => ipv4.octets().to_vec(),
+                std::net::IpAddr::V6(ipv6) => ipv6.octets().to_vec(),
+            };
+
+            ip_addr_port_a.extend_from_slice(&socket_addr_a.port().to_be_bytes());
 
             //B handles handshake under load, should send cookie reply message with invalid cookie
             let HandleMsgResult { resp, .. } = b
@@ -2161,7 +2168,7 @@ mod test {
                     &a_to_b_buf.as_slice()[..init_hello_len],
                     &mut *b_to_a_buf,
                     PeerPtr(0),
-                    SocketAddr::V4(ip_a),
+                    &ip_addr_port_a,
                 )
                 .unwrap();
 
@@ -2207,7 +2214,7 @@ mod test {
                     &a_to_b_buf.as_slice()[..retx_init_hello_len],
                     &mut *b_to_a_buf,
                     PeerPtr(0),
-                    SocketAddr::V4(ip_a),
+                    &ip_addr_port_a
                 )
                 .unwrap();
 
@@ -2245,13 +2252,30 @@ mod test {
             let resp_msg_type: MsgType = b_to_a_buf.value[0].try_into().unwrap();
             assert_eq!(resp_msg_type, MsgType::RespHello);
 
+            let socket_addr_b = std::net::SocketAddr::V4(ip_b);
+            let mut ip_addr_port_b = [0u8; 18];
+            let mut ip_addr_port_b_len  = 0;
+            match socket_addr_b.ip() {
+                std::net::IpAddr::V4(ipv4) => {
+                    ip_addr_port_b[0..4].copy_from_slice(&ipv4.octets());
+                    ip_addr_port_b_len += 4;
+                }
+                std::net::IpAddr::V6(ipv6) => {
+                    ip_addr_port_b[0..16].copy_from_slice(&ipv6.octets());
+                    ip_addr_port_b_len += 16;
+                }
+            };
+
+            ip_addr_port_b[ip_addr_port_b_len..ip_addr_port_b_len+2].copy_from_slice(&socket_addr_b.port().to_be_bytes());
+            ip_addr_port_b_len += 2;
+
             //A handles RespHello message under load, should not send cookie reply
             assert!(a
                 .handle_msg_under_load(
                     &b_to_a_buf[..resp_hello_len],
                     &mut *a_to_b_buf,
                     PeerPtr(0),
-                    SocketAddr::V4(ip_b),
+                    &ip_addr_port_b[..ip_addr_port_b_len]
                 )
                 .is_err());
         });