Fix deprecation warning.
Fix deprecation warning.

libpnet/libpnet,tempbottle/libpnet,libpnet/libpnet,mrmonday/libpnet,little-dude/libpnet,returntoreality/libpnet,returntoreality/libpnet,tempbottle/libpnet,little-dude/libpnet,little-dude/libpnet,mrmonday/libpnet,mrmonday/libpnet,fsck/libpnet,little-dude/libpnet,symphorien/libpnet,fsck/libpnet,returntoreality/libpnet,symphorien/libpnet,symphorien/libpnet,tempbottle/libpnet,fsck/libpnet,david415/libpnet,fsck/libpnet,david415/libpnet,david415/libpnet,tempbottle/libpnet,libpnet/libpnet,david415/libpnet,libpnet/libpnet,symphorien/libpnet,mrmonday/libpnet,returntoreality/libpnet