lxc should depend on iproute2
lxc has features, such as the router network mode that makes use of the ip
command to perform neighbour proxy manipulation.
The busybox ip command does not support the ip neigh add proxy
command and so the iproute2
package is needed to function correctly.
This is similar to the lxd package, which already specifies iproute2 as a dependency: https://pkgs.alpinelinux.org/package/edge/testing/x86_64/lxd