Create gen-duid.sh

This is a simple script I found/modified to create your DUID for your modem.

bin/gen-duid.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+ascii2hex() { echo -n "$*" | awk 'BEGIN{for(n=0;n<256;n++)ord[sprintf("%c",n)]=n}{len=split($0,c,"");for(i=1;i<=len;i++)printf("%x",ord[c[i]])}'; }
+
+printhexstring() { awk '{l=split($0,c,"");for(i=1;i<l-1;i=i+2)printf("%s:",substr($0,i,2));print(substr($0,l-1,2))}'; }
+
+echo
+echo "Step 1) RG information"
+echo
+while read -p "  Manufacturer [1=Pace, 2=Motorola]: " mfg; do
+        ([ "$mfg" = "1" ] || [ "$mfg" = "2" ]) && break
+done
+while read -p "  Serial number: " serial; do [ -n "$serial" ] && break; done
+echo
+
+[ "$mfg" = "1" ] && mfg="00D09E" || mfg="001E46"
+echo -n "Identifier: "
+ascii2hex "$mfg-$serial" | printhexstring
+
+cat << EOF
+
+Step 2) Navigate to System->Advanced->Networking in webConfigurator.
+
+IPv6 Options
+    DHCP6 DUID: DUID-EN
+    DUID-EN
+        Enterprise Number: 3561
+        Identifier: As shown above
+
+Click Save.
+
+Step 3) Navigate to Interfaces->WAN in webConfigurator.
+
+General Configuration
+    IPv6 Configuration Type: DHCP6
+    MAC Address: Same as MAC address of RG
+
+Other options are probably needed, so set those too.
+
+Click Save. This will finally save dhcp6c's DUID file and start the client.
+
+Step 4) Finished, hopefully.
+
+Good luck!
+
+EOF