This patch adds (and suppresses) the extra ipv4/ipv6 words before the
actual address that newer DRBD versions add.

[iustin@google.com: slightly changed the patch to conform to style
guide, and changed the commit message]
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>