Use OSError exceptions instead of dead exceptions

Summary:
Error codes used:

• ENODEV: no such device (no netwrok card has been found)
• EAFNOSUPPORT: Address family not supported by protocol (no IPv6 support)

Side edit: prune unreacheable code after an exception

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: http://devcentral.nasqueron.org/D1700