Fix ifconfig for MPTCP - we need 32-bit device-flags

Reported-by: Niels Laukens <niels.laukens@vrt.be>
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Correctly display inode-information

netstat -e allows to show the info about the inode. We have to display
it also for MPTCP.

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Build-Fix

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>