iproute package split

Hi, I am in the process of splitting the 'tc' utility off from iproute package. The motivation for this comes from two things: 1) Due to it's xt/ipt action, tc depends on iptables. 2) iproute is part of the 'Core' group. These two in combination lead to iptables being pulled into Core as a dependency although not strictly necessary - tc is not necessary for basic system functionality and ip itself works fine without. So far I added a new 'tc' subpackage to iproute.spec which will contain tc, all related binaries and configs and relevant man pages. This package depends on a version of iproute which is greater than the last release before the split, which should prevent conflicts when updating. For user convenience though, I would appreciate if an iproute package update from a pre-split version would automatically pull the tc subpackage as well. Is this possible without adding a dependency from 'iproute' to 'iproute-tc' (which would defeat the purpose, of course)? Cheers, Phil