tftpd confuses clients on multihomed hosts:
When the tftpd receives a connection from the client it answers on a new
connection. This connection is bound to INADDR_ANY. On a multihomed host
the routing may select another interface closer to the client as its source
IP address. This confuses the client (they are trivial afterall!) because
it may think the reply is coming from another host.
This enhancement extracts the original destination IP address on a multihomed
host from the first arriving packet, and uses that as the ip address to bind
the new connection to.
Fix: Patch /usr/src/libexec/tftpd.c with this diff -u: (diff.out.gz.uue)
How-To-Repeat: Connect from a tftp client to the IP address of an interface on the server
host that is not the closest one to the client. The return connection will
have the IP address of the closer interface.
You can watch this with tcpdump.
The patch attached to the PR is horrid and needs much improvement.
Off to look at something else...
I'll take TFTP PRs
Give back into the pool until later.
For bugs matching the following criteria:
Status: In Progress Changed: (is less than) 2014-06-01
Reset to default assignee and clear in-progress tags.
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