I believe the issue relates to if-pre-up.d/vlan - a comparison is performed
to evaluate the actual device MTU against that of the interface being
provisioned however when actioning the change the raw device name is used
in the ip link command:
if [ -n "$IF_MTU" -a -n "$IF_VLAN_RAW_DEVICE" ]; then
CUR_DEV_MTU=$(cat /sys/class/net/$IF_VLAN_RAW_DEVICE/mtu)
# increase the vlan raw device mtu if needed
if [ -n "$CUR_DEV_MTU" ] && [ $CUR_DEV_MTU -lt $IF_MTU ]; then
* ip link set dev $IF_VLAN_RAW_DEVICE mtu $IF_MTU*
fi
fi
Shouldn't this be:
if [ -n "$IF_MTU" -a -n "$IF_VLAN_RAW_DEVICE" ]; then
CUR_DEV_MTU=$(cat /sys/class/net/$IF_VLAN_RAW_DEVICE/mtu)
# increase the vlan raw device mtu if needed
if [ -n "$CUR_DEV_MTU" ] && [ $CUR_DEV_MTU -lt $IF_MTU ]; then
* ip link set dev $IFACE mtu $IF_MTU*
fi
fi
I would be happy to submit a patch if i knew where
On Mon, 12 Sep 2016 18:35:29 -0400 Dan Streetman <
dan.street...@canonical.com> wrote:
> sorry, there was a problem with the last patch; it didn't work if the
> vlan interface already existed, even if the raw device mtu was too
> low. this updated debdiff checks and increases the dev mtu even if
> the vlan interface already exists.
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