diff --git a/src/sysinfo b/src/sysinfo
index 5338e2593..103898802 100755
--- a/src/sysinfo
+++ b/src/sysinfo
@@ -25,7 +25,7 @@ fi
 # helper to set global "normalized" to the expanded version of MAC ($1)
 function normalize_mac()
 {
-    mac=$1
+    local mac=$1
     if [ -z "${mac}" ]; then
         echo "FATAL: unable to normalize empty mac!"
         exit 1
@@ -167,6 +167,7 @@ function get_nic_mappings()
 function get_network_interfaces()
 {
     count=1
+    nic_tag_count=1
     # ignore 'LINK SLOT ADDRESS INUSE CLIENT' line
     for line in $(pfexec /sbin/dladm show-phys -m | grep -v "^LINK " | awk '{ print $1,$3 }' | tr ' ' '='); do
         nicnames=
@@ -191,6 +192,19 @@ function get_network_interfaces()
             NIC_internal=${iface}
         fi
 
+        for tag in "${NicTagsMacs[@]}"; do
+            tag_fields=(${tag//=/ })
+            tag_name=${tag_fields[0]}
+            normalize_mac ${tag_fields[1]}
+            tag_mac=${normalized}
+            if [[ "${tag_mac}" == "${mac}" ]]; then
+                [[ -n ${nicnames} ]] && nicnames="${nicnames},"
+                nicnames="${nicnames}${tag_name}"
+                NicTags[${nic_tag_count}]="${tag_name}=${iface}"
+                ((nic_tag_count++))
+            fi
+        done
+
         NetworkInterfaces[${count}]=${iface}
         eval "Network_Interface_${iface}_MAC_Address=${mac}"
         eval "Network_Interface_${iface}_IPv4_Address=${ip4addr}"
@@ -212,6 +226,19 @@ function get_network_interfaces()
     #done
 }
 
+function get_nic_tags()
+{
+    count=1
+    for line in $(/usr/bin/bootparams 2>/dev/null | grep "^[a-z0-9_]*_nic" ; grep "^[a-z0-9]*_nic" ${configfile} 2>/dev/null); do
+        fields=(${line//=/ })
+        key=${fields[0]}
+        if [[ $key != "admin_nic" ]] && [[ $key != "external_nic" ]] && [[ $key != "internal_nic" ]]; then
+            NicTagsMacs[${count}]=$(echo ${line} | sed -e 's/_nic//')
+            ((count++))
+        fi
+    done
+}
+
 function get_bootparams()
 {
     count=1
@@ -265,6 +292,13 @@ END
     [[ -n ${NIC_external} ]] && echo "NIC_external='${NIC_external}'"
     [[ -n ${NIC_internal} ]] && echo "NIC_internal='${NIC_internal}'"
 
+    for tag in "${NicTags[@]}"; do
+        tag_fields=(${tag//=/ })
+        tag_name=${tag_fields[0]}
+        int=${tag_fields[1]}
+        echo "NIC_${tag_name}='${int}'"
+    done
+
     for iface in "${NetworkInterfaces[@]}"; do
         mac_var="Network_Interface_${iface}_MAC_Address"
         ipv4_var="Network_Interface_${iface}_IPv4_Address"
@@ -370,6 +404,7 @@ get_live_image_buildstamp
 get_disks
 get_hostname
 get_nic_mappings
+get_nic_tags
 get_network_interfaces
 get_bootparams