phablet@ubuntu-phablet:~/packages$ sudo dpkg -i libc6_2.21-0ubuntu4_armhf.deb libc-bin_2.21-0ubuntu4_armhf.deb multiarch-support_2.21-0ubuntu4_armhf.deb
[sudo] password for phablet: 
(Reading database ... 40994 files and directories currently installed.)
Preparing to unpack libc6_2.21-0ubuntu4_armhf.deb ...
Unpacking libc6:armhf (2.21-0ubuntu4) over (2.21-0ubuntu4) ...
Preparing to unpack libc-bin_2.21-0ubuntu4_armhf.deb ...
Unpacking libc-bin (2.21-0ubuntu4) over (2.21-0ubuntu4) ...
Preparing to unpack multiarch-support_2.21-0ubuntu4_armhf.deb ...
Unpacking multiarch-support (2.21-0ubuntu4) over (2.21-0ubuntu4) ...
Setting up libc6:armhf (2.21-0ubuntu4) ...
Setting up libc-bin (2.21-0ubuntu4) ...
Setting up multiarch-support (2.21-0ubuntu4) ...