{How to} hotspot/tether stock 183.46.15.XT907 on GSM Straighttalk

I got the native Hotspot working on gsm-unlocked RAZR M with Straighttalk/ATT sim!
(Not sure if this has already been posted, but I struggled with this for awhile, so I wanted to share).

It would always fail, and tell me to activate this feature call ATT.
All I had to do was edit the APN settings to include "dun"...and boom, it worked!
My APN settings:

Name: straight talk
APN: tfdata
Proxy: not set
Port: not set
Username: not set
Password: not set
Server: not set
MMSC: http://mms-tf.net
MMS proxy: mm3.tracfone.com
MMS port: 80
MCC: 310
MNC: 410
Authentication type: None
APN type: default,admin,fota,mms,hipri,dun (and no spaces after commas)
APN protocal: IPv4
APN roaming protocol: IPv4
Bearer: Unspecified
MVNO type: none

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