TODO List for netfilter / iptables. Currently maintained by Harald Welte Please inform me, if you want to work on any of the TODO items, so I can update this list and thus prevent two people doing the same work. CVS ID: $Id: TODO,v 1.66 2002/09/15 11:29:18 laforge Exp $ IMPORTANT issues: - erroneously too-fast dropped conntrack for half-open TCP connections [JK] - wrong 'Out of window' error message from tcp-windowtracking [JK] - --mac-source not working in FORWARD (manpage bug?) - update manpages to include recently submitted extensions - locally bound udp port can still be used for MASQ/SNAT - fix for ICMP DNAT info leak - unaligned access of nulldevname during string match - update documentation to reflect newnat - ip6_tables not working on ultrasparc (20020912155314.GA20741@paradigm.rfc822.org) TO BE INVESTIGATED: - packet counters on ultrasparc platform (32bit userspace/64bit kernel issue) - token ring crashes ?? - iptables-save/restore problems with log-level - ip_conntrack rmmod loop (sometimes, Yan's patch?) - conntrack helper not called for first packet (udp!) - different behaviour for first packet towards an l2-unresolved ip? NICE to have: - endianness wrt. unnamed initializers in conntrack helpers after pptp-patch applied - make RPC conntrack work again - multicast connection tracking - sysctl support for ftp-multi, irc-conntrack/nat, ftp-fxp - integrate HOPLIMIT for ipv6 in patch-o-matic [HW] - u32 classifier (port from tc -> iptables) [YU] - documentation for libiptc - port conntrack to IPv6 (code reuse?) [BC] - ip_nat_ident module - make iptables / ip6tables use the same codebase (as libiptc) [KA] - libipq reentrancy [JM] - compiling without O2 issue - libipq runtime version, do before 1.2.5 [JM] - add ICMP type-3-code-13 option to REJECT - export list of matches/targets via proc-fs - ip6tables mangle needs 'route_me_harder' equivalent FUTURE extensions: - dealing with fragmented expectation-causes (i.e. DCC chat split over two packets, etc.) - conntrack / nat failover [HW] - brainstorming about 2.5 conntrack code - netlink interface for conntrack manipulation from userspace [HW] - unified nfnetlink for queue,ulog,conntrack (and more?) (2.5 issue) Userspace queuing for 2.5: - Integration with nfnetlink. - Multiple queues per protocol. - Netlink broadcast support. - Allow multiple reader/writers in userspace. - How to handle multiple protocols (e.g. use separate queue handlers or a multiplexer like ipqmpd). - Peformance improvements: multipart messages, mmaped socket (possibly). - Simplify queuing logic, which is quite ugly at the moment. (BC suggested removing logic from kernel). - Allow userspace to set nfmark. - Allow userspace to set queue length etc. - Possibly pass conntrack/NAT info to userspace with packet. ====================================================================== [BC] Brad Chapman [HW] Harald Welte [JK] Jozsef Kadlecsik [JM] James Morris [KA] Kiz-Szabo Andras [MB] Marc Boucher [RR] Paul 'Rusty' Russel [YU] Yon Uriarte