| Commit message (Collapse) | Author | Age | Files | Lines |
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- Only request AAAAs for the IPv4-only hostname, since that's
all the information being used. Perhaps at some point in the
future when _validation_ of the IPv4 address(es)'s presence
within the IPv6 address(es) is being done this should be
revisited.
- Only use the first AAAA returned to find the DNS64 prefix.
It's not clear how to properly resolve any potential DNS64
prefix conflicts anyway.
- Re-try DNS64 prefix discovery on any type of error.
If clatd was started (presumably an IPv6-only network), retry
DNS64 prefix discovery with exponential backoff. Some
"permanent" errors can be indistinguishable from transient
errors (e.g. receiving an erroneous SERVFAIL from a DNS
resolver, ...).
- Fix-up back-off logic to not sleep 128 then 120, 120, ...
:-)
Bug: 17569702
Change-Id: I226ea7772cd7c88d2b60153ef76e5435400e11aa
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When plat prefix detection is done on a non-default network it
must use the network specific version of getaddrinfo() so the
plat prefix corresponds to the particular network. The network
is specified to clatd via a NetID command line argument.
(cherry picked from commit a1c871c8efad6c0b69e27d3b85e82a27e282b8be)
Change-Id: I270c5afc4b445cf20e95fd3e58eada6bc24b16ef
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1. When started from netd, DNS lookups (used to detect the NAT64
prefix) fail because ANDROID_DNS_MODE=local. Unset it.
2. Only add the SIGTERM handler just before starting the event
loop. Otherwise, if clatd hangs before the event loop is
started (e.g., when #1 happens), it can't be stopped.
While I'm at it, add a couple of logging statements.
Change-Id: Ie24b37e34b729ce6cd3769b5d64348f2c1b9627d
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This software provides the nat 4->6 translation needed for the "clat" part of
the 464xlat standard. It is needed for better IPv4 application support while
on an IPv6-only mobile network connection using 464xlat's nat64 (such as
T-Mobile's IPv6 trial).
A general diagram of how 464xlat works:
http://dan.drown.org/android/clat/Clat-Plat.png
Depends-on: I2392f8127dcd90d16b0f20ff31bcc5aa096db464
Change-Id: If2bc6916fc66fd4bca7cc241c83cfae839b82e15
Signed-off-by: Daniel Drown <dan-android@drown.org>
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