Hello,
This is a patch for the 2.2.15pre16 masquerade to correctly
support multiple output devices. I didn't tested it: no masq env.
This patch is only compiled.
The problems:
- The DLOOSE entries incorrectly talk to a destination using wrong maddr
as a source address. For the NO_DADDR entries it is possible the assigned
maddr to be wrong because the destination is not known when the entry is
created with a specific maddr, f.e. ip_masq_irc.
The proposed changes:
- change ms->maddr after changing ms->daddr, i.e. if the routing
requires new src address (maddr) for the outgoing packets. This is
required for entries with NO_DADDR and DLOOSE flags, i.e. when the
maddr is not known until the ms->daddr is correct. For the DLOOSE
entries changing the ms->maddr after receiving an incoming/outgoing
packet is not required from the masquerade but it can be used from
ip_masq_user to select entries by maddr (is that correct?).
- allow NO_DADDR and DLOOSE entries to listen on all devices, i.e.
by ignoring maddr in the lookups.
- ip_masq_ftp changed to lookup by maddr.
- ip_masq_user now uses maddr specified from the user space. I'm not
sure if ipmasqadm must be patched but it looks like that is not
needed.
One question to the net gurus:
Is the change in icmp.c correct? Is the original daddr in
rt->key.dst ?
Please, someone to test. I'm unable to test all aspects of the
MASQ code.
Regards
-- Julian Anastasov <uli@linux.tu-varna.acad.bg>
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This archive was generated by hypermail 2b29 : Fri Apr 07 2000 - 21:00:07 EST