Rede KVM não é coisa minha, realmente me incomoda. É por isso que eu tive que cavar um pouco mais e descobri que o "tipo de portadora" se traduz no parâmetro bond_use_carrier
em /etc/network/interfaces
. Cite de aqui :
use_carrier
Specifies whether or not miimon should use MII or ETHTOOL
ioctls vs. netif_carrier_ok() to determine the link
status. The MII or ETHTOOL ioctls are less efficient and
utilize a deprecated calling sequence within the kernel. The
netif_carrier_ok() relies on the device driver to maintain its
state with netif_carrier_on/off; at this writing, most, but
not all, device drivers support this facility.
If bonding insists that the link is up when it should not be,
it may be that your network device driver does not support
netif_carrier_on/off. The default state for netif_carrier is
"carrier on," so if a driver does not support netif_carrier,
it will appear as if the link is always up. In this case,
setting use_carrier to 0 will cause bonding to revert to the
MII / ETHTOOL ioctl method to determine the link state.
A value of 1 enables the use of netif_carrier_ok(), a value of
0 will use the deprecated MII / ETHTOOL ioctls. The default
value is 1.
Portanto, escolha "netif" e, em seguida, coloque o seu link offline. Se o seu sistema não reconhecer que o link está inativo, volte para "ioctl".