Index: nsock/src/nsock_pcap.c
--- nsock/src/nsock_pcap.c.orig
+++ nsock/src/nsock_pcap.c
@@ -171,7 +171,7 @@ static int nsock_pcap_get_l3_offset(pcap_t *pt, int *d
     #ifdef DLT_PPP_ETHER
     case DLT_PPP_ETHER:
     #endif
-    #if (FREEBSD || OPENBSD || NETBSD || BSDI || MACOSX)
+    #if (FREEBSD || OPENBSD || SECBSD || NETBSD || BSDI || MACOSX)
     offset = 4;break;
     #else
       #ifdef SOLARIS
@@ -179,7 +179,7 @@ static int nsock_pcap_get_l3_offset(pcap_t *pt, int *d
       #else
         offset = 24;break; /* Anyone use this? */
       #endif /* ifdef solaris */
-    #endif /* if freebsd || openbsd || netbsd || bsdi */
+    #endif /* if freebsd || openbsd || secbsd || netbsd || bsdi */
     #ifdef DLT_RAW
     case DLT_RAW: offset = 0; break;
     #endif /* DLT_RAW */