Public bug reported: This bug is present in 16.04 as well as 18.04, including the upstream version of ifenslave as far as I can tell. But as a formality let's assume ifenslave-2.9ubuntu1
/etc/network/if-pre-up.d/ifenslave assumes xmit_hash_policy can be set in any order, as below: # xmit_hash_policy can be set anytime. # Changing xmit_hash_policy requires $BOND_MASTER to be down. sysfs_change_down xmit_hash_policy "$IF_BOND_XMIT_HASH_POLICY" However, this comment is not true. For example when trying to create the following in /etc/network/interfaces: iface bond0 inet manual bond-slaves none bond-mode balance-tlb bond-miimon 100 bond-xmit_hash_policy 1 Results in this error in dmesg on boot, since the mode balance-tlb is set after xmit_hash_policy: [ 15.210041] xmit_hash_policy param is irrelevant in mode load balancing (round-robin) The script should set xmit_hash_policy after setting mode. An ugly workaround at the moment is to do: iface bond0 inet manual bond-slaves none bond-miimon 100 pre-up /bin/echo 5 > /sys/class/net/bond0/bonding/mode; /bin/echo 1 > /sys/class/net/bond0/bonding/xmit_hash_policy ** Affects: ifenslave (Ubuntu) Importance: Undecided Status: New ** Tags: bonding ifenslave -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768345 Title: ifenslave fails to set xmit_hash_policy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifenslave/+bug/1768345/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs