11 Aug
2017
11 Aug
'17
10:46 a.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/openggsn/commit/?id=8f5d38cc134a21151e6ab0e0c29b910…
commit 8f5d38cc134a21151e6ab0e0c29b9106614df8b9
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Thu Aug 3 00:47:03 2017 +0200
Support setting TUN device IPv6 address + prefix
As we can now have PDP contexts with IPv6 user IP payload,
it is useful to extend the TUN related code to be able to
configure the tun device IPv6 address + prefix length
Change-Id: I899d21e52d02e0b8384af29ddd489ff19c8f2cf6
http://cgit.osmocom.org/openggsn/commit/?id=72a38b55e38407aa6c6b1cd32f84819…
commit 72a38b55e38407aa6c6b1cd32f848198ceee1287
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Wed Aug 9 21:58:12 2017 +0200
IPv6: in46_addr: OSMO_ASSERT() in case of unsupported calls
There's a bit of trickery with the ip_pool and it's "lengty=8" IPv6
prefix handling, let's make sure we don't accidentially call any
support functions with addresses of wrong length.
Change-Id: I444c190bdcd18780344e1f0dad4faf3bcf9da5a5
http://cgit.osmocom.org/openggsn/commit/?id=1ae98777d9b1ee62e6900caf4bb580d…
commit 1ae98777d9b1ee62e6900caf4bb580d1a42bb416
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Wed Aug 9 20:28:52 2017 +0200
IPv6: Support PCO for IPv6 DNS addresses
In IPv6, DNS server information is not passed along as IPCP6 like
in IPv5 with IPCP. The reason is that IPCP6 (for PPP) doesn't
support passing DNS server information. Rather, the relevant RFCs
indicate DHCPv6 should be used even over point-to-point links.
3GPP decided to avoid DHCPv6 dependency for stateless autoconfiguration
(the only mandatory IPv6 configuration mechanism) and added some new
non-PPP-style PCO information elements ("containers") which can among
other things inform a MS about IPV6 DNS servers.
That same mechanism can also be used to inform the MS about IPv4 DNS
servers, so for IPv4 there are now two competing mechanisms: IPCP and
the new "native" PCO container. With this patch, we support both
for IPv4.
Change-Id: I21499afd61def8c925f7838bde76f34d28214b56
http://cgit.osmocom.org/openggsn/commit/?id=d46bcd236e93432c894a939f4e5810d…
commit d46bcd236e93432c894a939f4e5810dc5e9b4974
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Tue Aug 8 23:27:22 2017 +0200
IPv6: Implement IPv6 prefix assignment via ICMPv6 router advertisement
The 3GPP specs are quite strange when it comes to how an IPv6 address
or rather prefix is assigned to an IPv6 PDP context. The designated
method for allocating the IPv6 address via the PDP EUA (End User
Address) Information Element in the GTP signalling plane is *not*
used to allocate the address/prefix. Instead, the EUA is used to
allocate an "interface identifier" to the MS, which it the uses
to derive its link-local source address to send a router solicitation.
The GGSN subsequently answers witha router advertisement, advertising
a single/64 prefix, whihcthe MS then uses to generate it's real IPv6
source address for subsequent communication.
Change-Id: Icddf7d30e01d76a4784bcef5787b36f52f703a9f
-----------------------------------------------------------------------
Summary of changes:
ggsn/checksum.c | 12 +++++++++---
ggsn/icmpv6.c | 12 ++++++++----
2 files changed, 17 insertions(+), 7 deletions(-)
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