With the house move recently completed I ended up losing my line so the bosses BT wifi and phone number could be transferred
XP can be a bit flaky with these things so I thought I'd share, and record my solution
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Won't connect to BT because of IP issue
Use a logged in tablet if you can, go to dosbox, run cmd, run ipconfig
This gives details of a successful login
For me I went here
google
win xp connection-specific DNS suffix
and put the word
home
into the connection-specific DNS suffix box
and it all worked fabby after that, everything else was automatic good luck and happy surfing