Based on kernel version 6.11
. Page generated on 2024-09-24 08:21 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | .. SPDX-License-Identifier: GPL-2.0 ================================== 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> |