Merge pull request #2274 from appveyor/fix_ipaddresses

Fix IP discovery in enable-ssh.sh

scripts/enable-ssh.sh

@@ -27,7 +27,7 @@ sudo ufw allow OpenSSH > /dev/null 2>&1
 EXT_IP=$(curl -sf https://www.appveyor.com/tools/my-ip.aspx)
 
 # get ip address of management network interface and figure out corresponding port on NAT
-INT_IP=$(hostname --ip-address)
+INT_IP=$(ip -o -4 addr show up primary scope global | ( read -r num dev fam addr rest; echo ${addr%/*}; ))
 IFS='.' read -r -a INT_IP_ARR <<< "$INT_IP"
 PORT=$(( 22000 + (${INT_IP_ARR[2]} - 0) * 256 + ${INT_IP_ARR[3]} ))