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Start with a netlink receive buffersize of 130k for the netlink event socket;
double the netlink receive buffer size in case an ENOBUFS is reported.
Also align function naming and its parameters.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Rework the IPv6 relay logic to make it more robust by making
use of libnltiny to process netlink messages.
At the same time reimplement the IPv6 relay finite state machine
to make the relay logic less error prone
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Use libnl-tiny to construct and process netlink messages when
manipulating IPv6 routes and fetching IPv6 addresses.
This fixes lingering netlink error messages on the netlink socket
in case route deletion failed causing fetching of IPv6 addresses
to be aborted and odhcpd faultly assuming no IPv6 addresses being
present on the interface.
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ia_reconf is only set but nowhere used; so let's remove it ...
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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In case infinite leasetime is assigned to a non static DHCPv4/v6 lease
override the infinite lifetime of the lease when either a DHCPv4/v6
decline or release is received.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Set bound flag for DHCPv4 and DHCPv6 assignments when the IPv6/IPv4 address
is leased to a client.
This will prevent the printing of leases and hostname/IPv4/IPv6 address
combinations in the state file for for which the IPv4/6 address has not
been assigned.
Also this will fix the printing of assignments which have been declined
by the clients
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Add support for infinite leasetime value; this can be done by
specifying "infinite" as leasetime value which is similar to
dnsmasq infinite leasetime support.
Specifying "infinite" as leasetime is valid for both the host
and dhcp uci sections.
A DHCPv4/DHCPv6 assignment is now considered infinite if valid_unil
holds the value 0.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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Patch by Daniel Dickinson
Signed-off-by: Steven Barth <steven@midlink.org>
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RFC: dhcpv4 support openwrt alias ip addr
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Signed-off-by: Patrick Grimm <patrick@lunatiki.de>
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Signed-off-by: Patrick Grimm <patrick@lunatiki.de>
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Signed-off-by: Patrick Grimm <patrick@lunatiki.de>
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Signed-off-by: John Crispin <blogic@openwrt.org>
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Fix selection of IPv6 DNS address in DHCPv6 and RA overwrite as an address could be selected
with preferred lifetime zero while IPv6 addresses are in use with non zero preferred
lifetimes.
Fix tries to pick the IPv6 address with the longest preferred lifetime now.
Fixes also the issue an IPv6 address with preferred lifetime zero could be returned in DHCPv6
DNS server option while an IPv6 address with non zero preferred lifetime is returned as DNS
recursive RA option for the same set of available IPv6 addresses.
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RFC 2132 defines:
3.5. Router Option
The router option specifies a list of IP addresses for routers on the
client's subnet. Routers SHOULD be listed in order of preference.
The code for the router option is 3. The minimum length for the
router option is 4 octets, and the length MUST always be a multiple
of 4.
Code Len Address 1 Address 2
+-----+-----+-----+-----+-----+-----+-----+-----+--
| 3 | n | a1 | a2 | a3 | a4 | a1 | a2 | ...
+-----+-----+-----+-----+-----+-----+-----+-----+--
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As described in RFC3315 §15 any solicit, confirm, rebind or information request message is discarded if the destination address is unicast
Likewise any request (§18.2.1), renew (§18.2.3), release (§18.2.6) or decline (§18.2.7) message is discarded and the server replies with the status code use multicast.
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