networking - Mininet / python cannot assign requested adress [Errno 99] -

i using host.cmd() command of mininet execute script networking:

print h1.cmd('cd ../src/; sudo ./script.py -r tcm -i h1-eth0 -a fd07::1 &> ../mininet/test.txt &') 

the problem script cannot assign network adress fd07::14! tried other addresses, localhost not working.

but when run exact same command directly in mininet cli works. think there context problem? know how solve it?