ping6:tldr:acea9
The command "ping6 -a ${host}" is used to test the connectivity and assess the accessibility of an IPv6 host (specified by ${host}) using the ping utility.
Here is a breakdown of the command:
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"ping6": This command initiates the ping utility specifically designed for IPv6 addresses. It sends ICMPv6 Echo Request messages to the specified host and waits for ICMPv6 Echo Reply messages in response.
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"-a": This option is used to resolve and display the hostname associated with the IPv6 address being pinged. It provides the corresponding hostname for the IP address in the output, if available.
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"${host}": This is a placeholder representing the target IPv6 address or hostname that you want to ping. You need to replace "${host}" with the actual IPv6 address or hostname.
By executing this command, you will receive information about the reachability, round-trip time, and hostname (if resolved) of the specified IPv6 host.