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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/networking/ip_dynaddr.txt | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/networking/ip_dynaddr.txt')
-rw-r--r-- | Documentation/networking/ip_dynaddr.txt | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/networking/ip_dynaddr.txt b/Documentation/networking/ip_dynaddr.txt new file mode 100644 index 000000000000..45f3c1268e86 --- /dev/null +++ b/Documentation/networking/ip_dynaddr.txt @@ -0,0 +1,29 @@ +IP dynamic address hack-port v0.03 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +This stuff allows diald ONESHOT connections to get established by +dynamically changing packet source address (and socket's if local procs). +It is implemented for TCP diald-box connections(1) and IP_MASQuerading(2). + +If enabled[*] and forwarding interface has changed: + 1) Socket (and packet) source address is rewritten ON RETRANSMISSIONS + while in SYN_SENT state (diald-box processes). + 2) Out-bounded MASQueraded source address changes ON OUTPUT (when + internal host does retransmission) until a packet from outside is + received by the tunnel. + +This is specially helpful for auto dialup links (diald), where the +``actual'' outgoing address is unknown at the moment the link is +going up. So, the *same* (local AND masqueraded) connections requests that +bring the link up will be able to get established. + +[*] At boot, by default no address rewriting is attempted. + To enable: + # echo 1 > /proc/sys/net/ipv4/ip_dynaddr + To enable verbose mode: + # echo 2 > /proc/sys/net/ipv4/ip_dynaddr + To disable (default) + # echo 0 > /proc/sys/net/ipv4/ip_dynaddr + +Enjoy! + +-- Juanjo <jjciarla@raiz.uncu.edu.ar> |