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dce267832a
but the core routines are there and seem to be working.
o lib/ipv6.[ch] written
o Lexical analyser recognizes IPv6 addresses and when in IPv6
mode, treats pure IPv4 addresses as router IDs.
o Router ID must be configured manually on IPv6 systems.
o Added SCOPE_ORGANIZATION for org-scoped IPv6 multicasts.
o Fixed few places where ipa_(hton|ntoh) was called as a function
returning converted address.
105 lines
3.3 KiB
Plaintext
105 lines
3.3 KiB
Plaintext
Core
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* protocols: implement dumping of protocol-dependent rte attributes
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- IPv6 support
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- io.c: refuse old-style multicasts for unnumbered interfaces?
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- counters (according to SNMP MIB?)
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- better memory allocators
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- real attribute cache
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- real neighbor cache
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- default preferences of protocols: prefer BGP over OSPF/RIP external routes?
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- static: check validity of route destination?
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- static: allow specifying a per-route filter program for setting route attributes?
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- rte_update: check whether all bits not covered by masklen are zero
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- rte_update: debug mode
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- netlink: import Linux route attributes to our rta's, so that they can be filtered?
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- iface: SIOCGIFINDEX exists on glibc systems, but it doesn't work on 2.0.x kernels!
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- socket: Use IP_RECVERR for BGP TCP sockets?
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- OSPF: refuse running on non-multicast devices
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- config: executable config files
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- config: when parsing prefix, check zero bits
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- config: reconfiguration
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- config: useless rules when protocols disabled
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- krt: rescan interfaces when route addition fails?
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- krt: does PERSIST mode have any sense if kernel syncer is shut down as last?
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- cmdline: implement
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- cmdline: echo of debug/log messages
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- tagging of external routes?
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- port to FreeBSD
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Cleanup
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~~~~~~~
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- right usage of DBG vs. debug
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- cleanup debugging calls
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- logging and tracing; use appropriate log levels
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- check incoming packets and log errors!!
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- check log calls for trailing newlines
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- check if all protocols set proper packet priorities and TTL's.
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- replace all NUM, IPA and expr tokens by constant filter expressions
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- try compiling with -Wunused
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- does everybody test return value of sk_open?
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- add references to RFC's we did follow
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Various ideas
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~~~~~~~~~~~~~
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- real multipath (doesn't seem to be simple at all :()
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- fake multipath (even less simple)
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- route recalculation timing and flap dampening [see RFC2439 for algorithms]
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- aggregate engine: standard route aggregation and summarization [RFC2519]
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- aggregate engine: injection of manually configured pseudo-static routes
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- generate default route if any working BGP connection exists (aggregate engine again?)
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- generate default route to IGP's (aggregate engine yet another time?)
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- look at RFC 2386 (QoS-based routing)
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RIP
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~~~
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- export-only and import-only mode?
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- drop RIPv1 (Historic protocol)?
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- Route Tag
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- limit routing table xfer (frequency, only to neighbors)
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OSPF
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~~~~
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- importing of device routes for networks where we don't run OSPF
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- check incoming packets using neighbor cache
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- RFC2328 appendix E: Use a better algorithm
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- automatic generation of external route tags (RFC1403)
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- RFC1587 NSSA areas
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- RFC2370 opaque LSA's
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- respect interface MTU and try not to create larger packets unless unavoidable
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BGP
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~~~
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- aggregation, ATOMIC_AGGREGATE
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- communities
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- attributes must be sorted!
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- re-export of NEXT_HOP attribute
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- BGP session over currently down interface
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- LOCAL_PREF attribute
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- error notification received -> log error
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- set TTL to 1 (configurable?)
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- consulting IGP for next-hop information? (what if it changes?)
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- inter-advertisement delay???!
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- normalize (sort) incoming AS-SET's
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- maximum length of AS paths
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- expected neighbor AS
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- hold time
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- idle timer after error: initial value, exponential growth, maximum value
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- import of IGP routes (use external route tags from OSPF)
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