diff --git a/srcs/lwip/src/arch_linux/netif/pcapif.c b/srcs/lwip/src/arch_linux/netif/pcapif.c
index 10814c3..aa6e7d6 100644
--- a/srcs/lwip/src/arch_linux/netif/pcapif.c
+++ b/srcs/lwip/src/arch_linux/netif/pcapif.c
@@ -330,14 +330,15 @@ static err_t netif_input_data(struct pbuf *p, struct netif *inp) {
             if (ebuf != NULL) {
                 if (strlen(pContext->session.data.svrBaseMac) == 0) {
                     if (strlen(pContext->session.data.svrBaseMac) == 0) {
+                        const struct eth_hdr *payloadEth = (const struct eth_hdr *)ebuf->payload;
                         sprintf(pContext->session.data.svrBaseMac,
                                 "%02X:%02X:%02X:%02X:%02X:%02X",
-                                eth->src.addr[0],
-                                eth->src.addr[1],
-                                eth->src.addr[2],
-                                eth->src.addr[3],
-                                eth->src.addr[4],
-                                eth->src.addr[5]);
+                                payloadEth->src.addr[0],
+                                payloadEth->src.addr[1],
+                                payloadEth->src.addr[2],
+                                payloadEth->src.addr[3],
+                                payloadEth->src.addr[4],
+                                payloadEth->src.addr[5]);
                     }
                 }