diff --git a/print-slow.c b/print-slow.c
index fdfefcc..2db3581 100644
--- a/print-slow.c
+++ b/print-slow.c
@@ -18,21 +18,13 @@
  * Original code by Hannes Gredler (hannes@juniper.net)
  */
 
-#ifndef lint
-static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.8 2006-10-12 05:44:33 hannes Exp $";
-#endif
-
+#define NETDISSECT_REWORKED
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <tcpdump-stdinc.h>
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "interface.h"
 #include "extract.h"
 #include "addrtoname.h"
@@ -40,8 +32,8 @@
 #include "oui.h"
 
 struct slow_common_header_t {
-    u_int8_t proto_subtype;
-    u_int8_t version;
+    uint8_t proto_subtype;
+    uint8_t version;
 };
 
 #define	SLOW_PROTO_LACP                     1
@@ -67,7 +59,7 @@
     { 0x0020, "Remote Evaluating" },
     { 0x0040, "Remote Stable" },
     { 0, NULL}
-}; 
+};
 
 #define SLOW_OAM_CODE_INFO          0x00
 #define SLOW_OAM_CODE_EVENT_NOTIF   0x01
@@ -87,15 +79,15 @@
 };
 
 struct slow_oam_info_t {
-    u_int8_t info_type;
-    u_int8_t info_length;
-    u_int8_t oam_version;
-    u_int8_t revision[2];
-    u_int8_t state;
-    u_int8_t oam_config;
-    u_int8_t oam_pdu_config[2];
-    u_int8_t oui[3];
-    u_int8_t vendor_private[4];
+    uint8_t info_type;
+    uint8_t info_length;
+    uint8_t oam_version;
+    uint8_t revision[2];
+    uint8_t state;
+    uint8_t oam_config;
+    uint8_t oam_pdu_config[2];
+    uint8_t oui[3];
+    uint8_t vendor_private[4];
 };
 
 #define SLOW_OAM_INFO_TYPE_END_OF_TLV 0x00
@@ -157,29 +149,29 @@
 };
 
 struct slow_oam_link_event_t {
-    u_int8_t event_type;
-    u_int8_t event_length;
-    u_int8_t time_stamp[2];
-    u_int8_t window[8];
-    u_int8_t threshold[8];
-    u_int8_t errors[8];
-    u_int8_t errors_running_total[8];
-    u_int8_t event_running_total[4];
+    uint8_t event_type;
+    uint8_t event_length;
+    uint8_t time_stamp[2];
+    uint8_t window[8];
+    uint8_t threshold[8];
+    uint8_t errors[8];
+    uint8_t errors_running_total[8];
+    uint8_t event_running_total[4];
 };
 
 struct slow_oam_variablerequest_t {
-    u_int8_t branch;
-    u_int8_t leaf[2];
+    uint8_t branch;
+    uint8_t leaf[2];
 };
 
 struct slow_oam_variableresponse_t {
-    u_int8_t branch;
-    u_int8_t leaf[2];
-    u_int8_t length;
+    uint8_t branch;
+    uint8_t leaf[2];
+    uint8_t length;
 };
 
 struct slow_oam_loopbackctrl_t {
-    u_int8_t command;
+    uint8_t command;
 };
 
 static const struct tok slow_oam_loopbackctrl_cmd_values[] = {
@@ -189,8 +181,8 @@
 };
 
 struct tlv_header_t {
-    u_int8_t type;
-    u_int8_t length;
+    uint8_t type;
+    uint8_t length;
 };
 
 #define LACP_TLV_TERMINATOR     0x00
@@ -213,14 +205,14 @@
 };
 
 struct lacp_tlv_actor_partner_info_t {
-    u_int8_t sys_pri[2];
-    u_int8_t sys[ETHER_ADDR_LEN];
-    u_int8_t key[2];
-    u_int8_t port_pri[2];
-    u_int8_t port[2];
-    u_int8_t state;
-    u_int8_t pad[3];
-};          
+    uint8_t sys_pri[2];
+    uint8_t sys[ETHER_ADDR_LEN];
+    uint8_t key[2];
+    uint8_t port_pri[2];
+    uint8_t port[2];
+    uint8_t state;
+    uint8_t pad[3];
+};
 
 static const struct tok lacp_tlv_actor_partner_info_state_values[] = {
     { 0x01, "Activity"},
@@ -235,33 +227,34 @@
 };
 
 struct lacp_tlv_collector_info_t {
-    u_int8_t max_delay[2];
-    u_int8_t pad[12];
-}; 
+    uint8_t max_delay[2];
+    uint8_t pad[12];
+};
 
 struct marker_tlv_marker_info_t {
-    u_int8_t req_port[2];
-    u_int8_t req_sys[ETHER_ADDR_LEN];
-    u_int8_t req_trans_id[4];
-    u_int8_t pad[2];
-}; 
+    uint8_t req_port[2];
+    uint8_t req_sys[ETHER_ADDR_LEN];
+    uint8_t req_trans_id[4];
+    uint8_t pad[2];
+};
 
 struct lacp_marker_tlv_terminator_t {
-    u_int8_t pad[50];
-}; 
+    uint8_t pad[50];
+};
 
-void slow_marker_lacp_print(register const u_char *, register u_int);
-void slow_oam_print(register const u_char *, register u_int);
+static void slow_marker_lacp_print(netdissect_options *, register const u_char *, register u_int);
+static void slow_oam_print(netdissect_options *, register const u_char *, register u_int);
 
 const struct slow_common_header_t *slow_com_header;
 
 void
-slow_print(register const u_char *pptr, register u_int len) {
-
+slow_print(netdissect_options *ndo,
+           register const u_char *pptr, register u_int len)
+{
     int print_version;
 
     slow_com_header = (const struct slow_common_header_t *)pptr;
-    TCHECK(*slow_com_header);
+    ND_TCHECK(*slow_com_header);
 
     /*
      * Sanity checking of the header.
@@ -269,7 +262,7 @@
     switch (slow_com_header->proto_subtype) {
     case SLOW_PROTO_LACP:
         if (slow_com_header->version != LACP_VERSION) {
-            printf("LACP version %u packet not supported",slow_com_header->version);
+            ND_PRINT((ndo, "LACP version %u packet not supported",slow_com_header->version));
             return;
         }
         print_version = 1;
@@ -277,7 +270,7 @@
 
     case SLOW_PROTO_MARKER:
         if (slow_com_header->version != MARKER_VERSION) {
-            printf("MARKER version %u packet not supported",slow_com_header->version);
+            ND_PRINT((ndo, "MARKER version %u packet not supported",slow_com_header->version));
             return;
         }
         print_version = 1;
@@ -294,24 +287,24 @@
     }
 
     if (print_version) {
-        printf("%sv%u, length %u",
+        ND_PRINT((ndo, "%sv%u, length %u",
                tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype),
                slow_com_header->version,
-               len);
+               len));
     } else {
         /* some slow protos don't have a version number in the header */
-        printf("%s, length %u",
+        ND_PRINT((ndo, "%s, length %u",
                tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype),
-               len);
+               len));
     }
 
     /* unrecognized subtype */
     if (print_version == -1) {
-        print_unknown_data(pptr, "\n\t", len);
+        print_unknown_data(ndo, pptr, "\n\t", len);
         return;
     }
 
-    if (!vflag)
+    if (!ndo->ndo_vflag)
         return;
 
     switch (slow_com_header->proto_subtype) {
@@ -320,7 +313,7 @@
 
     case SLOW_PROTO_OAM:
         /* skip proto_subtype */
-        slow_oam_print(pptr+1, len-1);
+        slow_oam_print(ndo, pptr+1, len-1);
         break;
 
     case SLOW_PROTO_LACP:   /* LACP and MARKER share the same semantics */
@@ -328,17 +321,19 @@
         /* skip slow_common_header */
         len -= sizeof(const struct slow_common_header_t);
         pptr += sizeof(const struct slow_common_header_t);
-        slow_marker_lacp_print(pptr, len);
+        slow_marker_lacp_print(ndo, pptr, len);
         break;
     }
     return;
 
 trunc:
-    printf("\n\t\t packet exceeded snapshot");
+    ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
 }
 
-void slow_marker_lacp_print(register const u_char *tptr, register u_int tlen) {
-
+static void
+slow_marker_lacp_print(netdissect_options *ndo,
+                       register const u_char *tptr, register u_int tlen)
+{
     const struct tlv_header_t *tlv_header;
     const u_char *tlv_tptr;
     u_int tlv_len, tlv_tlen;
@@ -349,26 +344,26 @@
         const struct lacp_tlv_collector_info_t *lacp_tlv_collector_info;
         const struct marker_tlv_marker_info_t *marker_tlv_marker_info;
     } tlv_ptr;
-    
+
     while(tlen>0) {
         /* did we capture enough for fully decoding the tlv header ? */
-        TCHECK2(*tptr, sizeof(struct tlv_header_t));
+        ND_TCHECK2(*tptr, sizeof(struct tlv_header_t));
         tlv_header = (const struct tlv_header_t *)tptr;
         tlv_len = tlv_header->length;
 
-        printf("\n\t%s TLV (0x%02x), length %u",
+        ND_PRINT((ndo, "\n\t%s TLV (0x%02x), length %u",
                tok2str(slow_tlv_values,
                        "Unknown",
                        (slow_com_header->proto_subtype << 8) + tlv_header->type),
                tlv_header->type,
-               tlv_len);
+               tlv_len));
 
         if ((tlv_len < sizeof(struct tlv_header_t) ||
             tlv_len > tlen) &&
             tlv_header->type != LACP_TLV_TERMINATOR &&
             tlv_header->type != MARKER_TLV_TERMINATOR) {
-            printf("\n\t-----trailing data-----");
-            print_unknown_data(tptr+sizeof(struct tlv_header_t),"\n\t  ",tlen);
+            ND_PRINT((ndo, "\n\t-----trailing data-----"));
+            print_unknown_data(ndo, tptr+sizeof(struct tlv_header_t), "\n\t  ", tlen);
             return;
         }
 
@@ -376,7 +371,7 @@
         tlv_tlen=tlv_len-sizeof(struct tlv_header_t);
 
         /* did we capture enough for fully decoding the tlv ? */
-        TCHECK2(*tptr, tlv_len);
+        ND_TCHECK2(*tptr, tlv_len);
 
         switch((slow_com_header->proto_subtype << 8) + tlv_header->type) {
 
@@ -385,34 +380,34 @@
         case ((SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO):
             tlv_ptr.lacp_tlv_actor_partner_info = (const struct lacp_tlv_actor_partner_info_t *)tlv_tptr;
 
-            printf("\n\t  System %s, System Priority %u, Key %u" \
+            ND_PRINT((ndo, "\n\t  System %s, System Priority %u, Key %u" \
                    ", Port %u, Port Priority %u\n\t  State Flags [%s]",
-                   etheraddr_string(tlv_ptr.lacp_tlv_actor_partner_info->sys),
+                   etheraddr_string(ndo, tlv_ptr.lacp_tlv_actor_partner_info->sys),
                    EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->sys_pri),
                    EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->key),
                    EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port),
                    EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port_pri),
                    bittok2str(lacp_tlv_actor_partner_info_state_values,
                               "none",
-                              tlv_ptr.lacp_tlv_actor_partner_info->state));
+                              tlv_ptr.lacp_tlv_actor_partner_info->state)));
 
             break;
 
         case ((SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO):
             tlv_ptr.lacp_tlv_collector_info = (const struct lacp_tlv_collector_info_t *)tlv_tptr;
 
-            printf("\n\t  Max Delay %u",
-                   EXTRACT_16BITS(tlv_ptr.lacp_tlv_collector_info->max_delay));
+            ND_PRINT((ndo, "\n\t  Max Delay %u",
+                   EXTRACT_16BITS(tlv_ptr.lacp_tlv_collector_info->max_delay)));
 
             break;
 
         case ((SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO):
             tlv_ptr.marker_tlv_marker_info = (const struct marker_tlv_marker_info_t *)tlv_tptr;
 
-            printf("\n\t  Request System %s, Request Port %u, Request Transaction ID 0x%08x",
-                   etheraddr_string(tlv_ptr.marker_tlv_marker_info->req_sys),
+            ND_PRINT((ndo, "\n\t  Request System %s, Request Port %u, Request Transaction ID 0x%08x",
+                   etheraddr_string(ndo, tlv_ptr.marker_tlv_marker_info->req_sys),
                    EXTRACT_16BITS(tlv_ptr.marker_tlv_marker_info->req_port),
-                   EXTRACT_32BITS(tlv_ptr.marker_tlv_marker_info->req_trans_id));
+                   EXTRACT_32BITS(tlv_ptr.marker_tlv_marker_info->req_trans_id)));
 
             break;
 
@@ -424,24 +419,24 @@
                 tlv_len = sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad) +
                     sizeof(struct tlv_header_t);
                 /* tell the user that we modified the length field  */
-                if (vflag>1)
-                    printf(" (=%u)",tlv_len);
+                if (ndo->ndo_vflag>1)
+                    ND_PRINT((ndo, " (=%u)", tlv_len));
                 /* we have messed around with the length field - now we need to check
                  * again if there are enough bytes on the wire for the hexdump */
-                TCHECK2(tlv_ptr.lacp_marker_tlv_terminator->pad[0],
+                ND_TCHECK2(tlv_ptr.lacp_marker_tlv_terminator->pad[0],
                         sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad));
             }
 
             break;
 
         default:
-            if (vflag <= 1)
-                print_unknown_data(tlv_tptr,"\n\t  ",tlv_tlen);
+            if (ndo->ndo_vflag <= 1)
+                print_unknown_data(ndo, tlv_tptr, "\n\t  ", tlv_tlen);
             break;
         }
         /* do we want to see an additional hexdump ? */
-        if (vflag > 1) {
-            print_unknown_data(tptr+sizeof(struct tlv_header_t),"\n\t  ",
+        if (ndo->ndo_vflag > 1) {
+            print_unknown_data(ndo, tptr+sizeof(struct tlv_header_t), "\n\t  ",
                                tlv_len-sizeof(struct tlv_header_t));
         }
 
@@ -450,21 +445,23 @@
     }
     return;
 trunc:
-    printf("\n\t\t packet exceeded snapshot");
+    ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
 }
 
-void slow_oam_print(register const u_char *tptr, register u_int tlen) {
-
+static void
+slow_oam_print(netdissect_options *ndo,
+               register const u_char *tptr, register u_int tlen)
+{
     u_int hexdump;
 
     struct slow_oam_common_header_t {
-        u_int8_t flags[2];
-        u_int8_t code;
+        uint8_t flags[2];
+        uint8_t code;
     };
 
     struct slow_oam_tlv_header_t {
-        u_int8_t type;
-        u_int8_t length;
+        uint8_t type;
+        uint8_t length;
     };
 
     union {
@@ -479,71 +476,71 @@
         const struct slow_oam_variableresponse_t *slow_oam_variableresponse;
         const struct slow_oam_loopbackctrl_t *slow_oam_loopbackctrl;
     } tlv;
-    
+
     ptr.slow_oam_common_header = (struct slow_oam_common_header_t *)tptr;
     tptr += sizeof(struct slow_oam_common_header_t);
     tlen -= sizeof(struct slow_oam_common_header_t);
 
-    printf("\n\tCode %s OAM PDU, Flags [%s]",
+    ND_PRINT((ndo, "\n\tCode %s OAM PDU, Flags [%s]",
            tok2str(slow_oam_code_values, "Unknown (%u)", ptr.slow_oam_common_header->code),
            bittok2str(slow_oam_flag_values,
                       "none",
-                      EXTRACT_16BITS(&ptr.slow_oam_common_header->flags)));
+                      EXTRACT_16BITS(&ptr.slow_oam_common_header->flags))));
 
     switch (ptr.slow_oam_common_header->code) {
     case SLOW_OAM_CODE_INFO:
         while (tlen > 0) {
             ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr;
-            printf("\n\t  %s Information Type (%u), length %u",
+            ND_PRINT((ndo, "\n\t  %s Information Type (%u), length %u",
                    tok2str(slow_oam_info_type_values, "Reserved",
                            ptr.slow_oam_tlv_header->type),
                    ptr.slow_oam_tlv_header->type,
-                   ptr.slow_oam_tlv_header->length);
+                   ptr.slow_oam_tlv_header->length));
 
             hexdump = FALSE;
             switch (ptr.slow_oam_tlv_header->type) {
             case SLOW_OAM_INFO_TYPE_END_OF_TLV:
                 if (ptr.slow_oam_tlv_header->length != 0) {
-                    printf("\n\t    ERROR: illegal length - should be 0");
+                    ND_PRINT((ndo, "\n\t    ERROR: illegal length - should be 0"));
                 }
                 return;
-                
+
             case SLOW_OAM_INFO_TYPE_LOCAL: /* identical format - fall through */
             case SLOW_OAM_INFO_TYPE_REMOTE:
                 tlv.slow_oam_info = (const struct slow_oam_info_t *)tptr;
-                
+
                 if (tlv.slow_oam_info->info_length !=
                     sizeof(struct slow_oam_info_t)) {
-                    printf("\n\t    ERROR: illegal length - should be %lu",
-                           (unsigned long) sizeof(struct slow_oam_info_t));
+                    ND_PRINT((ndo, "\n\t    ERROR: illegal length - should be %lu",
+                           (unsigned long) sizeof(struct slow_oam_info_t)));
                     return;
                 }
 
-                printf("\n\t    OAM-Version %u, Revision %u",
+                ND_PRINT((ndo, "\n\t    OAM-Version %u, Revision %u",
                        tlv.slow_oam_info->oam_version,
-                       EXTRACT_16BITS(&tlv.slow_oam_info->revision));
+                       EXTRACT_16BITS(&tlv.slow_oam_info->revision)));
 
-                printf("\n\t    State-Parser-Action %s, State-MUX-Action %s",
+                ND_PRINT((ndo, "\n\t    State-Parser-Action %s, State-MUX-Action %s",
                        tok2str(slow_oam_info_type_state_parser_values, "Reserved",
                                tlv.slow_oam_info->state & OAM_INFO_TYPE_PARSER_MASK),
                        tok2str(slow_oam_info_type_state_mux_values, "Reserved",
-                               tlv.slow_oam_info->state & OAM_INFO_TYPE_MUX_MASK));
-                printf("\n\t    OAM-Config Flags [%s], OAM-PDU-Config max-PDU size %u",
+                               tlv.slow_oam_info->state & OAM_INFO_TYPE_MUX_MASK)));
+                ND_PRINT((ndo, "\n\t    OAM-Config Flags [%s], OAM-PDU-Config max-PDU size %u",
                        bittok2str(slow_oam_info_type_oam_config_values, "none",
                                   tlv.slow_oam_info->oam_config),
                        EXTRACT_16BITS(&tlv.slow_oam_info->oam_pdu_config) &
-                       OAM_INFO_TYPE_PDU_SIZE_MASK);
-                printf("\n\t    OUI %s (0x%06x), Vendor-Private 0x%08x",
+                       OAM_INFO_TYPE_PDU_SIZE_MASK));
+                ND_PRINT((ndo, "\n\t    OUI %s (0x%06x), Vendor-Private 0x%08x",
                        tok2str(oui_values, "Unknown",
                                EXTRACT_24BITS(&tlv.slow_oam_info->oui)),
                        EXTRACT_24BITS(&tlv.slow_oam_info->oui),
-                       EXTRACT_32BITS(&tlv.slow_oam_info->vendor_private));
+                       EXTRACT_32BITS(&tlv.slow_oam_info->vendor_private)));
                 break;
-                
+
             case SLOW_OAM_INFO_TYPE_ORG_SPECIFIC:
                 hexdump = TRUE;
                 break;
-                
+
             default:
                 hexdump = TRUE;
                 break;
@@ -555,8 +552,8 @@
             }
 
             /* do we also want to see a hex dump ? */
-            if (vflag > 1 || hexdump==TRUE) {
-                print_unknown_data(tptr,"\n\t  ",
+            if (ndo->ndo_vflag > 1 || hexdump==TRUE) {
+                print_unknown_data(ndo, tptr, "\n\t  ",
                                    ptr.slow_oam_tlv_header->length);
             }
 
@@ -568,34 +565,34 @@
     case SLOW_OAM_CODE_EVENT_NOTIF:
         while (tlen > 0) {
             ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr;
-            printf("\n\t  %s Link Event Type (%u), length %u",
+            ND_PRINT((ndo, "\n\t  %s Link Event Type (%u), length %u",
                    tok2str(slow_oam_link_event_values, "Reserved",
                            ptr.slow_oam_tlv_header->type),
                    ptr.slow_oam_tlv_header->type,
-                   ptr.slow_oam_tlv_header->length);
+                   ptr.slow_oam_tlv_header->length));
 
             hexdump = FALSE;
             switch (ptr.slow_oam_tlv_header->type) {
             case SLOW_OAM_LINK_EVENT_END_OF_TLV:
                 if (ptr.slow_oam_tlv_header->length != 0) {
-                    printf("\n\t    ERROR: illegal length - should be 0");
+                    ND_PRINT((ndo, "\n\t    ERROR: illegal length - should be 0"));
                 }
                 return;
-                
+
             case SLOW_OAM_LINK_EVENT_ERR_SYM_PER: /* identical format - fall through */
             case SLOW_OAM_LINK_EVENT_ERR_FRM:
             case SLOW_OAM_LINK_EVENT_ERR_FRM_PER:
             case SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM:
                 tlv.slow_oam_link_event = (const struct slow_oam_link_event_t *)tptr;
-                
+
                 if (tlv.slow_oam_link_event->event_length !=
                     sizeof(struct slow_oam_link_event_t)) {
-                    printf("\n\t    ERROR: illegal length - should be %lu",
-                           (unsigned long) sizeof(struct slow_oam_link_event_t));
+                    ND_PRINT((ndo, "\n\t    ERROR: illegal length - should be %lu",
+                           (unsigned long) sizeof(struct slow_oam_link_event_t)));
                     return;
                 }
 
-                printf("\n\t    Timestamp %u ms, Errored Window %" PRIu64
+                ND_PRINT((ndo, "\n\t    Timestamp %u ms, Errored Window %" PRIu64
                        "\n\t    Errored Threshold %" PRIu64
                        "\n\t    Errors %" PRIu64
                        "\n\t    Error Running Total %" PRIu64
@@ -605,13 +602,13 @@
                        EXTRACT_64BITS(&tlv.slow_oam_link_event->threshold),
                        EXTRACT_64BITS(&tlv.slow_oam_link_event->errors),
                        EXTRACT_64BITS(&tlv.slow_oam_link_event->errors_running_total),
-                       EXTRACT_32BITS(&tlv.slow_oam_link_event->event_running_total));
+                       EXTRACT_32BITS(&tlv.slow_oam_link_event->event_running_total)));
                 break;
-                
+
             case SLOW_OAM_LINK_EVENT_ORG_SPECIFIC:
                 hexdump = TRUE;
                 break;
-                
+
             default:
                 hexdump = TRUE;
                 break;
@@ -623,8 +620,8 @@
             }
 
             /* do we also want to see a hex dump ? */
-            if (vflag > 1 || hexdump==TRUE) {
-                print_unknown_data(tptr,"\n\t  ",
+            if (ndo->ndo_vflag > 1 || hexdump==TRUE) {
+                print_unknown_data(ndo, tptr, "\n\t  ",
                                    ptr.slow_oam_tlv_header->length);
             }
 
@@ -632,14 +629,14 @@
             tptr += ptr.slow_oam_tlv_header->length;
         }
         break;
- 
+
     case SLOW_OAM_CODE_LOOPBACK_CTRL:
         tlv.slow_oam_loopbackctrl = (const struct slow_oam_loopbackctrl_t *)tptr;
-        printf("\n\t  Command %s (%u)",
+        ND_PRINT((ndo, "\n\t  Command %s (%u)",
                tok2str(slow_oam_loopbackctrl_cmd_values,
                        "Unknown",
                        tlv.slow_oam_loopbackctrl->command),
-               tlv.slow_oam_loopbackctrl->command);
+               tlv.slow_oam_loopbackctrl->command));
                tptr ++;
                tlen --;
         break;
@@ -652,8 +649,8 @@
     case SLOW_OAM_CODE_VAR_RESPONSE:
     case SLOW_OAM_CODE_PRIVATE:
     default:
-        if (vflag <= 1) {
-            print_unknown_data(tptr,"\n\t  ", tlen);
+        if (ndo->ndo_vflag <= 1) {
+            print_unknown_data(ndo, tptr, "\n\t  ", tlen);
         }
         break;
     }