int minprefix = -1;
for (size_t i = 0; i < iface->ia_addr_len; ++i) {
- if (iface->ia_addr[i].preferred > now &&
+ if (iface->ia_addr[i].preferred > (uint32_t)now &&
iface->ia_addr[i].prefix < 64 &&
iface->ia_addr[i].prefix > minprefix)
minprefix = iface->ia_addr[i].prefix;