Added thcping6

tools/thcping6.md

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+# thcping6
+
+Notes
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+
+Help Text
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+```
+thcping6 v2.3 (c) 2013 by van Hauser / THC <vh@thc.org> www.thc.org
+
+Syntax: thcping6 [-af] [-H o:s:v] [-D o:s:v] [-F dst] [-t ttl] [-c class] [-l label] [-d size] [-S port|-U port] interface src6 dst6 [srcmac [dstmac [data]]]
+
+Craft your special icmpv6 echo request packet.
+You can put an "x" into src6, srcmac and dstmac for an automatic value.
+Options:
+  -a              add a hop-by-hop header with router alert option.
+  -q              add a hop-by-hop header with quickstart option.
+  -E              send as ethertype IPv4
+  -H o:s:v        add a hop-by-hop header with special content
+  -D o:s:v        add a destination header with special content
+  -D "xxx"        add a large destination header which fragments the packet
+  -f              add a one-shot fragementation header
+  -F ipv6address  use source routing to this final destination
+  -t ttl          specify TTL (default: 64)
+  -c class        specify a class (0-4095)
+  -l label        specify a label (0-1048575)
+  -d data_size    define the size of the ping data buffer
+  -S port         use a TCP SYN packet on the defined port instead of ping
+  -U port         use a UDP packet on the defined port instead of ping
+o:s:v syntax: option-no:size:value, value is in hex, e.g. 1:2:feab
+Returns -1 on error or no reply, 0 on normal reply or 1 on error reply.
+```
+
+Example Usage
+-------
+
+Links
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