This list is not comprehensive and is in no particular order.
| Base IPv4/IPv6 support data type | Adrian Chadd | Completed | Tested |
| internal dns | Adrian Chadd | In Progress | Yes |
| external dns | | N/A | N/A |
| comm layer | Adrian Chadd | Completed | Yes |
| ipcache | adrian | Completed | Yes |
| fqdncache | adrian | no | no |
| clientdb | Adrian Chadd | Completed | Yes |
| pconn | | completed | No |
| ident | Adrian Chadd | Completed | No |
| ACL: IPv6 src/dst | Adrian Chadd | Completed | Yes |
| ACL: IPv6 lookups | Adrian Chadd | Completed | Yes |
| ACL: IPv6 DNS | | completed | Yes |
| access_log | | completed | Yes |
| request_t changes | | completed | Yes |
| client_side changes | | completed | Yes |
| http changes | | completed | Yes |
| SNMP support | | completed | Yes |
| netdb: pinger | | completed | yes |
| netdb: core | | completed | yes |
| netdb: icmp | | completed | yes |
| ICP: receiving | | completed | No |
| ICP: sending | | completed | No |
| HTCP: sending | | | |
| HTCP: receiving | | completed | No |
| cache peers | | completed | No |
| ICP: multicast | | | |
| Server: HTTP connections | | completed | Yes |
| Server: ftp changes | | | |
| Server: whois | | | |
| Server: gopher | | | |
| Server: wais | | | |
| Server: ASN | | | |
| request forwarding | | completed | Yes |
| SSL server support | | | |
| CONNECT support | | Completed | Yes |
| NAT: getsockname (bsd) | | | |
| NAT: IP Filter | | | |
| NAT: Netfilter (linux) | | | |
| NAT: PF | | | |
| TPROXY: TPROXY2 | | | |
| TPROXY: TPROXY4 | | | |
| TPROXY: FreeBSD | | | |
| Connect timeouts (per-session, rather than per-attempt) | | | |
| HTTP server idle connection pooling | | | |
| Neighbor: health checks | adrian | Done | untested |
