--- tcpip.c.orig	Sun Mar 26 04:59:38 2000
+++ tcpip.c	Sat Apr  1 21:03:24 2000
@@ -977,6 +977,7 @@
  switch(datalink) {
  case DLT_EN10MB: offset = 14; break;
  case DLT_IEEE802: offset = 22; break;
+ case DLT_LOOP:
  case DLT_NULL: offset = 4; break;
  case DLT_SLIP:
 #ifdef DLT_SLIP_BSDOS
@@ -1004,6 +1005,7 @@
    break;
  case DLT_RAW: offset = 0; break;
  case DLT_FDDI: offset = 21; break;
+ case DLT_ENC: offset = 12; break;
  default: fatal("Unknown datalink type (%d)", datalink);
  }
 
