perl -pi.bak -e 's/ip-compute-[\d.]{7,15}-internal/ip-compute-10.25.25.25-internal/g' test.txt

##</code><code>##

$ cat test.txt
text.txt
yoda yoda yoda ip-compute-10.10.10.1-internal yadda yadda yadda
some more stuff

$ perl -pi.bak -e 's/ip-compute-[\d.]{7,15}-internal/ip-compute-10.25.25.25-internal/g' test.txt

$ cat test.txt
text.txt
yoda yoda yoda ip-compute-10.25.25.25-internal yadda yadda yadda
some more stuff