1 files changed, 20 insertions, 0 deletions
diff --git a/src/validators/ipv6-range b/src/validators/ipv6-range
new file mode 100644
index 0000000..7080860
--- /dev/null
+++ b/src/validators/ipv6-range
@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+from ipaddress import IPv6Address
+from sys import argv, exit
+
+if __name__ == '__main__':
+    if len(argv) > 1:
+        # try to pass validation and raise an error if failed
+        try:
+            ipv6_range = argv[1]
+            range_left = ipv6_range.split('-')[0]
+            range_right = ipv6_range.split('-')[1]
+            if not IPv6Address(range_left) < IPv6Address(range_right):
+                raise ValueError(f'left element {range_left} must be less than right element {range_right}')
+        except Exception as err:
+            print(f'Error: {ipv6_range} is not a valid IPv6 range: {err}')
+            exit(1)
+    else:
+        print('Error: an IPv6 range argument must be provided')
+        exit(1)