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3c15d410a9
On OpenWrt nc (netcat) connectivity test makes more sense than ping because a) for non-root users ping is not permitted, and b) nc is a default binary included with OpenWrt. We do, however, have to change the upstream default from using `nc -vz` to `printf "<http head request>"|nc` (with openwrt nc if text is sent then nc closes after a response and fails if no connection is made; the response is already thrown away (to /dev/null) by the existing code). Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>