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Returns the public / Internet-facing IP used by a host. Be careful with multiple outgoing IPs.
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| ### WINDOWS ### | |
| # option #1: generic version, from here: https://gallery.technet.microsoft.com/scriptcenter/Get-ExternalPublic-IP-c1b601bb | |
| Invoke-RestMethod http://ipinfo.io/json | Select -exp ip | |
| # option #2: Azure metadata service | |
| (Invoke-RestMethod -H @{'Metadata'='true'} "http://169.254.169.254/metadata/instance?api-version=2017-08-01").network.interface.ipv4.ipAddress.publicIpAddress | |
| ### LINUX ### | |
| dig +short myip.opendns.com @resolver1.opendns.com | |
| host myip.opendns.com resolver1.opendns.com | grep "myip.opendns.com has" | awk '{print $4}' | |
| wget -qO- http://ipecho.net/plain | xargs echo | |
| wget -qO - icanhazip.com | |
| curl ifconfig.co | |
| curl ifconfig.me | |
| curl icanhazip.com |
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