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+====== IPv6 Accesslog Snippets ======
+All IPv4 addresses:
+  cat access.log |awk '/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {print $1}'
+All IPv6 addresses:
+  cat access.log |awk '!/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {print $1}'
+Unique first block prefixes:
+  cat access.log |awk '!/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {print $1}'| awk -F: '{print $1}'|sort -n| uniq -c|sort -nr
+Unique full prefixes (but might be full address):
+  cat access.log |awk '!/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {print $1}'| awk -F:: '{print $1}'|sort|uniq -c|sort -nr