My original BV v1 card has "set up anywhere north of the canal but not within five hexes of 23BB5 or on or within the road net L2-L5-J6-...".
The card from BV v2 (the one that included Red Barricades) has the mistake in the picture, "set up anywhere north of the canal ≥ 6 hexes from 23BB5 or on/within the road net L2-L5-J6-...". I think it's obvious what happened; someone replaced "but not within fives hexes of" with "≥ 6" without reading the entire sentence.
The card from BV v3 has "set up anywhere north of the canal ≥ 6 hexes from 23BB5 and not on/within the road net L2-L5-J6-...". This fixed the v2 error by replacing "or" with "and not".
I think
@pybarrondo just found a change no one noticed and that never had any published errata!