You can issue both commands and have them run concurrently in one line like:

(dhclient &); (dhclient -6 &)

You could then add it to a BASH script or alike, named how you'd like. :)

More info on combining commands in Linux:

• http://www.comptechdoc.org/os/linux/manual2/runningcommands.html
• http://ubuntuforums.org/showthread.php?t=531589
• http://stackoverflow.com/questions/13077241/execute-combine-multiple-linux-commands-in-one-line

You can issue both commands and have them run concurrently in one line like:

(dhclient &); (dhclient -6 &)

You could then add it to a BASH script or alike, named how you'd like. :)

More info on combining commands in Linux:

• http://www.comptechdoc.org/os/linux/manual2/runningcommands.html
• http://ubuntuforums.org/showthread.php?t=531589
• https://stackoverflow.com/questions/13077241/execute-combine-multiple-linux-commands-in-one-line