Load order:
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
CaravanPack.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
Edit: Would SetFactionReaction 0200a4a3 1b2a4 0 solve my problem for the white legs at least? I am assuming here that 1 is non hostile and 0 is hostile.
Edit2: Scratch that, seems every DLC have their own player faction
Edit3: So I used "player.removefromallfactions" which would also remove the player from DLC factions. I am going to readd the player to these factions and see if that solves the problem. Also, are there any other factions that the player is a member of by default?
Edit4: Readding the player to DLC player factions solves the problem, at least for the white legs.