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1 files changed, 16 insertions, 0 deletions

diff --git a/ciscodomainshex b/ciscodomainshex
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+++ b/ciscodomainshex
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+#!/usr/bin/python
+
+# From http://www.perkin.org.uk/posts/serving-multiple-dns-search-domains-in-ios-dhcp.html
+
+import sys
+
+hexlist = []
+for domain in sys.argv[1:]:
+    for part in domain.split("."):
+        hexlist.append("%02x" % len(part))
+        for c in part:
+            hexlist.append(c.encode("hex"))
+    hexlist.append("00")
+
+print "".join([(".%s" % (x) if i and not i % 2 else x) \
+               for i, x in enumerate(hexlist)])