for (ssize_t i = 0; i < ipcnt; ++i) {
struct odhcpd_ipaddr *addr = &addrs[i];
- if (addr->dprefix > 64 || addr->dprefix == 0) {
+ if (addr->dprefix > 64 || addr->dprefix == 0 ||
+ (addr->dprefix == 64 && addr->prefix == 64)) {
continue; // Address not suitable
} else if (addr->dprefix > 32) {
addr->addr.s6_addr32[1] &= htonl(~((1U << (64 - addr->dprefix)) - 1));