IPV6CPDEBUG
IPV6CPDEBUG(("ipv6cp: returning Configure-%s", CODENAME(ret)));
IPV6CPDEBUG(("ipv6cp: up"));
IPV6CPDEBUG(("ipv6cp: down"));
IPV6CPDEBUG(("ipv6cp_ackci: received bad Ack!"));
IPV6CPDEBUG(("local LL address %s", llv6_ntoa(ifaceid)));
IPV6CPDEBUG(("ipv6cp_nakci: received bad Nak!"));
IPV6CPDEBUG(("ipv6cp_rejci: received bad Reject!"));
IPV6CPDEBUG(("ipv6cp: received interface identifier "));
IPV6CPDEBUG(("(%s)", llv6_ntoa(ifaceid)));
IPV6CPDEBUG(("ipv6cp: received COMPRESSTYPE "));
IPV6CPDEBUG(("(%d)", cishort));
IPV6CPDEBUG((" (%s)\n", CODENAME(newret)));