What's more, if I comment "auto bond0", "auto eth4", and "auto eth5" and manuall start up the interfaces with:
# ifup bond0
# ifup eth4
# ifup eth5
the bond0 interface does not come up correctly. With the previous ifenslave-2.6, this worked to bring up bond0. So, the latest ifenslave-2.6 you're testing is a step back.
What's more, if I comment "auto bond0", "auto eth4", and "auto eth5" and manuall start up the interfaces with:
# ifup bond0
# ifup eth4
# ifup eth5
the bond0 interface does not come up correctly. With the previous ifenslave-2.6, this worked to bring up bond0. So, the latest ifenslave-2.6 you're testing is a step back.