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1

Make curl download using non-Privacy extension IPv6 address?

rated 0 times [ 1] [ 0] / answers: 1 / hits: 679 / 2 Years ago, sat, march 12, 2022, 10:15:26

I currently use net.ipv6.conf.all.use_tempaddr=2 to get IPv6 privacy addresses (which have a random host part are and regenerated a couple times a day). I need dynamic DNS because the computer is connected to different networks and that changes the network part of the address. I'm using curl to download a dynamic DNS url and want it to use the Non-random address that uses my MAC. How can I make curl prefer the non-privacy address?

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Location: Ghana

Member since Sun, Mar 27, 2022

2 Years ago

answered 2 Years ago herfor · Accepted Answer

I used ajmitch's answer and some scripting to do this. (If anyone has a better way of getting the address, I would be glad to hear it.) You'll need to install curl

#! /bin/sh

# (C) 2011 Erik B. Andersen <[email protected]>

# Licensed under the latest version of the GPL as published by the Free Software Foundation



# Don't bother to reload when lo is configured.

if [ "$IFACE" = lo ]; then

        echo "Interface lo; skipping"

        exit 0

fi



if [ ! -e /usr/bin/curl ]; then

        echo "Curl not installed; skipping"

        exit 0

fi

if [ ! -e /sbin/ifconfig ]; then

        echo "Ifconfig not installed; skipping"

        exit 0

fi

if [ ! -e /bin/grep ]; then

        echo "Grep not installed; skipping"

        exit 0

fi

if [ ! -e /usr/bin/tr ]; then

        echo "Tr not installed; skipping"

        exit 0

fi

if [ ! -e /usr/bin/tail ]; then

        echo "Tail not installed; skipping"

        exit 0

fi



Hostname="something.example.org"

Password="something"

Interface="wlan0"



echo "Running curl"

curl --interface $(/sbin/ifconfig ${Interface} | /bin/grep "Global" | /usr/bin/tr "/" "

" | /usr/bin/tr " " "

" | /bin/grep "ff:fe"| /usr/bin/tail -n 1) -6 http://${Hostname}:${Password}@dyn.dns.he.net/nic/update?hostname=${Hostname}



exit 0