To recompile the ipsvd programs with the diet libc, check that you have the recent version of dietlibc installed.
Change to the package directory of ipsvd
cd /package/net/ipsvd/
Change the conf-cc and conf-ld to use
diet
echo 'diet -Os gcc -O2 -Wall' >src/conf-cc
echo 'diet -Os gcc -s -Os -pipe' >src/conf-ld
Rebuild and install the ipsvd programs:
package/install