threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
IP dynamic address hack-port v0.03
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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This stuff allows diald ONESHOT connections to get established by
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dynamically changing packet source address (and socket's if local procs).
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It is implemented for TCP diald-box connections(1) and IP_MASQuerading(2).
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If enabled[*] and forwarding interface has changed:
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1) Socket (and packet) source address is rewritten ON RETRANSMISSIONS
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while in SYN_SENT state (diald-box processes).
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2) Out-bounded MASQueraded source address changes ON OUTPUT (when
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internal host does retransmission) until a packet from outside is
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received by the tunnel.
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This is specially helpful for auto dialup links (diald), where the
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``actual'' outgoing address is unknown at the moment the link is
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going up. So, the *same* (local AND masqueraded) connections requests that
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bring the link up will be able to get established.
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[*] At boot, by default no address rewriting is attempted.
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To enable:
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# echo 1 > /proc/sys/net/ipv4/ip_dynaddr
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To enable verbose mode:
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# echo 2 > /proc/sys/net/ipv4/ip_dynaddr
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To disable (default)
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# echo 0 > /proc/sys/net/ipv4/ip_dynaddr
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Enjoy!
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-- Juanjo <jjciarla@raiz.uncu.edu.ar>
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