For future reference, because I always forget, if you are ever trying to figure out the IP address of your brother printer if and when it changes and your machines won't connect here's how:
Go to your printer and choose MENU- PRINT REPORTS - NETWORK CONFIG
http://www.brother-usa.com/FAQs/Solution.aspx?FAQID=200000039376&Model=1818&ProductID=MFCJ825DW&Keyword=#.Uy9NHD_n_IU
Get the IP address, go to control panel in Windows, edit the printer properties and you can hard code the correct IP address in the TCP/IP port assigned to the printer.
What is also curious when I print this report are all the different protocols that are enabled. I had no idea. Might be a good idea to turn off the ones you don't need:
TCP/IP
NetBIOS/IP (Most likely want to turn this off if possible)
LegacyAuth
Remote Set Up
Raw Port
Web Services
PC fax
FTP
mDNS
Proxy
IPv6
APIPA
SNMP
LPD
IPP
Network scan
POP3/SMTP
TFTP
LLMNR
Yeah... that's a lot of stuff not sure is all necessary in most cases. Would rather have most turned off by default. Will have to play around with turning on and off and see what happens.