Update cheatsheets

ping6

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ping6
+
+> Send ICMP ECHO_REQUEST packets to network hosts via IPv6 address.
+> More information: <https://manned.org/ping6>.
+
+- Ping a host:
+
+`ping6 {{host}}`
+
+- Ping a host only a specific number of times:
+
+`ping6 -c {{count}} {{host}}`
+
+- Ping a host, specifying the interval in seconds between requests (default is 1 second):
+
+`ping6 -i {{seconds}} {{host}}`
+
+- Ping a host without trying to lookup symbolic names for addresses:
+
+`ping6 -n {{host}}`
+
+- Ping a host and ring the bell when a packet is received (if your terminal supports it):
+
+`ping6 -a {{host}}`