With macvlan support built into the kernel (CONFIG_MACVLAN=y in .config), running linux 3.1.x, there is no /sys/module/macvlan. This causes _check_macvlan to incorrectly decide that there is no kernel support for macvlan and bail. Commenting out the call to _check_macvlan makes the module mostly work (but see followup bug about not bringing the interface up). Interestingly the module still works with _check_macvlan commented out, macvlan a kernel module, and the kernel module not explicitly loaded. The kernel autoloads the module when the "ip link add" command is run. The modprobe in _check_macvlan is not really necessary. Without macvlan support the "ip link add" fails with "RTNETLINK answers: Operation not supported". If this error message is deemed sufficiently obvious just removing the check altogether should suffice. For reference, my /etc/conf.d/net is: config_eth0="null" macvlan_macvlan0="eth0" mode_macvlan0="bridge" config_macvlan0="192.168.1.7/24" routes_macvlan0="default via 192.168.1.254"
Created attachment 297315 [details] remove-check-macvlan.patch This patch removes the _check_macvlan function. @robbat2: Can you test this and let me know if you have any issues?
@robbat2: I have tested the attached patch on this bug and the patch attached to bug #396429. Macvlan is a module here, with kernel 3.0, and with both of these patches, macvlan0 came up successfully. Let me know if you want me to do anything else before I commit.
This is fixed in commit 759f4ca. Thanks for the report.
