Add __attribute__((__noreturn__)) to various function prototypes in sbin/.

This general cleanup is useful in various ways. It helps the compiler
optimize better and it also helps later GCCs detect b

Add __attribute__((__noreturn__)) to various function prototypes in sbin/.

This general cleanup is useful in various ways. It helps the compiler
optimize better and it also helps later GCCs detect better when to give
-Wimplicit-fallthrough warnings and when not.

Found-with: -Wsuggest-attribute=noreturn

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dhclient - Change config 'ignore' directive behaviour.

- Change dhclient.conf directive 'ignore' to take a list of option names
rather than list of option declarations. e.g. 'ignore routers;'
in

dhclient - Change config 'ignore' directive behaviour.

- Change dhclient.conf directive 'ignore' to take a list of option names
rather than list of option declarations. e.g. 'ignore routers;'
instead of 'ignore routers 1.2.3.4;' The value in the declaration
was being ignored anyway.
- While there clean up the related code a bit.

Taken-from: OpenBSD

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dhclient - Refuse leases for already configured subnets.

Taken-from: OpenBSD

dhclient - Missed a reinitialize_interface() declaration.

Taken from: OpenBSD

dhclient - Remove cur_time global.

- Junk global cur_time, and use time(NULL) or local variables where
time is checked multiple times. Add a set_timeout_interval() function
to allow setting a ti

dhclient - Remove cur_time global.

- Junk global cur_time, and use time(NULL) or local variables where
time is checked multiple times. Add a set_timeout_interval() function
to allow setting a timeout based on an interval from current time.

- Fixes issues with initial startup where the global cur_time was
always old and caused initial DHCPDISCOVER or DHCPREQUEST packets
to be sent multiple times. And probably other timeout related
oddities.

Taken-from: OpenBSD

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dhclient - Add ignore keyword to conf file.

- Allows to ignore unwanted info from the server without
necessarily speciyfing a supersede value.

Taken-from: OpenBSD

dhclient - Remove unused field 'next' from struct timeout.

- There's only one timeout now, not a list.

Taken-from: OpenBSD

dhclient - Have only one timeout at once.

- Terminate with extreme prejudice the multiple timeout queuing
mechanism that was a holdover from when dhclient handled multiple
interfaces at once.

-

dhclient - Have only one timeout at once.

- Terminate with extreme prejudice the multiple timeout queuing
mechanism that was a holdover from when dhclient handled multiple
interfaces at once.

- Also move calculation of current time to just before check to see
if the timeout has expired.

Taken-from: OpenBSD

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dhclient - Nuke interface_link_status().

- Make use of interface_status() (check IFF_UP|IFF_RUNNING
and media status). The interface is forced up when dhclient
starts so the flags should be corr

dhclient - Nuke interface_link_status().

- Make use of interface_status() (check IFF_UP|IFF_RUNNING
and media status). The interface is forced up when dhclient
starts so the flags should be correct.

Taken-from: OpenBSD

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dhclient - Tweak leases file handling.

- Write out new leases file every time a lease is obtained. i.e. don't
append 20 leases before cleaning it up.
- Write new leases file after calling dhclient

dhclient - Tweak leases file handling.

- Write out new leases file every time a lease is obtained. i.e. don't
append 20 leases before cleaning it up.
- Write new leases file after calling dhclient-script to implement
new info. Gets interface configured first, and makes it more likely
the leases file reflects most current configuration.

Taken-from: OpenBSD

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dhclient - Sequential options processing more friendly.

- Starting DHCP packet options with DHO_DHCP_MESSAGE_TYPE. Now
DHCP-specific options always come after the option identifying
the packet a

dhclient - Sequential options processing more friendly.

- Starting DHCP packet options with DHO_DHCP_MESSAGE_TYPE. Now
DHCP-specific options always come after the option identifying
the packet as DHCP rather than BOOTP. Makes at least Nortel NetIP
DHCP server happier. Clean up some code and parameter passing.

Taken-from: OpenBSD

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dhclient - Drop medium/alias useless utilization.

- Dump some useless calls to dhclient-script. i.e. MEDIUM, PREINIT,
ARPSEND, ARPCHECK. Drop support for 'media', 'medium' and 'alias'
specificat

dhclient - Drop medium/alias useless utilization.

- Dump some useless calls to dhclient-script. i.e. MEDIUM, PREINIT,
ARPSEND, ARPCHECK. Drop support for 'media', 'medium' and 'alias'
specifications in dhclient.conf.
- Old leases still parse but these options now have no effect.
- Be more polite and decline all offers we don't accept.
- Fix a IMSG length check.
- Many expressions of support at various bars.

Taken-from: OpenBSD

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dhclient - Remove unused function.

Taken-from: OpenBSD

dhclient - Print out debug messages only when DEBUG is defined.

Taken-from: OpenBSD

dhclient - Add 6-byte MAC address to the log entries for DHCP ACK/NAK/OFFER.

- Log the packets before checking the client state. Makes it easy to find
MACs for 'surprise' DHCP servers.
- Swap ifi

dhclient - Add 6-byte MAC address to the log entries for DHCP ACK/NAK/OFFER.

- Log the packets before checking the client state. Makes it easy to find
MACs for 'surprise' DHCP servers.
- Swap ifi status check logic to be the first one.

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dhclient - Fix OpenBSD CVS ids to match current version.

Also remove DFly ones.

Initial import of binutils 2.22 on the new vendor branch

Future versions of binutils will also reside on this branch rather
than continuing to create new binutils branches for each new version.

Remove dhcp-3.0 from base and import dhclient from OpenBSD. Porting work
done by Matthias Schmidt and Andras Voroskoi.