I compiled the x64 and x86 versions for linux from 1.43.20. The x86 version should, in theory, work for rasberry pi as well. Not sure if there was any difference in the source from 1.43.18 which I did last. If not, its the same binary =)
http://grandis.nu/downloads/ps3netsrv1.43.20.zip
ps3netsrv32.1.43.20: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=933cb5381419f0cb77a1eef215e7dcc5ae0c02c2, not stripped
ps3netsrv64.1.43.20: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=0x695df64332b5dff3cee928624f0c15385101b4bd, not stripped