Hello i use the latest batman-advanced svn from trunk zeus:/usr/src/# svn co https://dev.open-mesh.net/svn/batman/trunk/ ... ... zeus:/usr/src/# cd trunk/batman-advanced/batool zeus:/usr/src/batman-advanced/battool# make clean rm -f battool *.o *~ zeus:/usr/src/batman-advanced/battool# make gcc -Wall -O0 -g -c -o battool.o battool.c gcc -Wall -O0 -g -c -o batping.o batping.c gcc -Wall -O0 -g -c -o functions.o functions.c gcc -Wall -O0 -g -c -o batroute.o batroute.c gcc -Wall -O0 -g -c -o batdump.o batdump.c gcc -Wall -O0 -g -c -o list-batman.o list-batman.c gcc -lpthread battool.o batping.o functions.o batroute.o batdump.o list-batman.o -o battool <- looks good but: zeus:/usr/src/batman-advanced/battool# ./battool Speicherzugriffsfehler i use Debian Etch 4.0 with latest upgrades greetings, Robert Tulke