Different ordering using my local built vs your test program on windoes

I read your comment on different ordering between windows and linus due to different random number generator. I build metis4.0 locally using rand()/(double)RAND_MAX as urand yet I get different ordering from your test problem onmetis.exe. My test graph is
6 11
2 3 5
1 3 4
1 2 4 5 6
2 3 6 5
1 3 4 6
3 4 5
The ordering iperm by my local build:
2
4
5
1
3
0
The ordering iperm by onmetis
0
4
5
2
3
1
I am using METIS_NodeND with numflag=0 and option_flag=0.
Is it because you use different random number generator?