# ip l sh eno49
2: eno49: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l sh eno50
3: eno50: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l sh bond0
6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l set mtu 9000 bond0
RTNETLINK answers: Invalid argument
root@controller002[SRV][YUL]:~# tail -1 /var/log/syslog
Apr 4 19:36:28 controller002 kernel: [ 8869.077853] bond0: Invalid MTU 9000 requested, hw max 1500
Since I upgrade the kernel from linux-image- 4.8.0-46- generic to linux-image- extra-4. 10.0-14- generic I'm facing when I want to change the MTU.
It seems to be known bug already fixed: https:/ /bugzilla. kernel. org/show_ bug.cgi? id=194763
# ip l sh eno49 MULTICAST, SLAVE,UP, LOWER_UP> mtu 9000 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
2: eno49: <BROADCAST,
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l sh eno50 MULTICAST, SLAVE,UP, LOWER_UP> mtu 9000 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
3: eno50: <BROADCAST,
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l sh bond0 MULTICAST, MASTER, UP,LOWER_ UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
6: bond0: <BROADCAST,
link/ether 5c:b9:01:8a:61:e9 brd ff:ff:ff:ff:ff:ff
# ip l set mtu 9000 bond0
RTNETLINK answers: Invalid argument
root@controller 002[SRV] [YUL]:~ # tail -1 /var/log/syslog
Apr 4 19:36:28 controller002 kernel: [ 8869.077853] bond0: Invalid MTU 9000 requested, hw max 1500
# modinfo ixgbe 4.10.0- 14-generic/ kernel/ drivers/ net/ethernet/ intel/ixgbe/ ixgbe.ko
filename: /lib/modules/
version: 4.4.0-k
license: GPL
description: Intel(R) 10 Gigabit PCI Express Network Driver
# modinfo bonding 4.10.0- 14-generic/ kernel/ drivers/ net/bonding/ bonding. ko
filename: /lib/modules/
author: Thomas Davis, <email address hidden> and many others
description: Ethernet Channel Bonding Driver, v3.7.1
version: 3.7.1