@Pete Ashdown yes, there is a workaround.
First one of the things that goes wrong is that ethernet media
autoconfiguration takes up time and causes network interfaces to take so
long to come up there is the possibility that that will interfere with
bonding configuring. You can hardcode the media speed/duplex/etc on the
switch and in /etc/network/interfaces
auto eth0
iface eth0 inet manual
media 1000baseTx-FD
for each eth0 device to be bonded.
Next you can get bonding to work by using pre-up, etc. in
/etc/network/interfaces like this:
auto bond0
iface bond0 inet manual
pre-up modprobe bonding mode=802.3ad ad_select=bandwidth downdelay=400
miimon=100 lacp_rate=0 max_bonds=2 ; ifconfig bond0 up ; ifconfig eth0 up ;
ifconfig eth1 up
post-up ifenslave bond0 eth0 eth1
pre-down ifenslave -d bond0 eth0 eth1
post-down ifconfig eth0 down ; ifconfig eth1 down ; ifconfig bond0 down
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https://bugs.launchpad.net/bugs/482419
Title:
802.3ad interface bonding fails if started too early
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