Hi, just out of curiosity: On Mon, Jun 05, 2017 at 23:49:52 +0200, Toke Høiland-Jørgensen wrote: [...] > +int > +ip6_common_octets(ip6_addr a, ip6_addr b) > +{ > + int i, j, common = 0; [...] Why aren't you using an unsigned int here? Cheers Christian -- www.cosmokey.com