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Dan Streetman f3808b872f sd-dhcp-client: correct retransmission timeout to match RFC 
This changes the retransmission timeout algorithm for requests
other than RENEW and REBIND. Previously, the retransmission timeout
started at 2 seconds, then doubling each retransmission up to a max
of 64 seconds. This is changed to match what RFC2131 section 4.1 describes,
which skips the initial 2 second timeout and starts with a 4 second timeout
instead. Note that -1 to +1 seconds of random 'fuzz' is added to each
timeout, in previous and current behavior.

This change is therefore slightly slower than the previous behavior in
attempting retransmissions when no server response is received, since the
first transmission times out in 4 seconds instead of 2.

Since TRANSIENT_FAILURE_ATTEMPTS is set to 3, the previous length of time
before a transient failure was reported back to systemd-networkd was
2 + 4 + 8 = 14 seconds, plus, on average, 3 seconds of random 'fuzz' for
a transient failure timeout between 11 and 17 seconds. Now, since the
first timeout starts at 4, the transient failure will be reported at
4 + 8 + 16 = 28 seconds, again plus 3 random seconds for a transient
failure timeout between 25 and 31 seconds.

Additionally, if MaxAttempts= is set, it will take slightly longer to
reach than with previous behavior.
 		2020-12-14 18:19:29 -05:00
..
ac-power license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
activate license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
analyze license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
ask-password license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
backlight backlight: add several debug logs and adjust log level of non critical error 2020-11-23 14:35:14 +01:00
basic time-util: fix typo 2020-12-14 17:56:01 +01:00
binfmt license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
boot license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
busctl license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
cgls license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
cgroups-agent license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
cgtop license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
core core: detect_container() may return negative errno 2020-12-14 19:35:11 +01:00
coredump meson: add option to skip installing to $sysconfdir 2020-11-12 11:21:46 +01:00
cryptsetup cryptsetup: give command line parameters proper names 2020-12-04 17:49:34 +01:00
debug-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
delta license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
detect-virt license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
dissect license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
environment-d-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
escape license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
firstboot license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
fsck license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
fstab-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
fuzz Merge pull request #17478 from yuwata/split-network-internal 2020-11-27 09:04:19 +09:00
getty-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
gpt-auto-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
hibernate-resume license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
home tree-wide: fix typo 2020-12-14 12:05:55 +00:00
hostname license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
hwdb license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
id128 license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
import curl-util: fix callback prototype 2020-11-23 14:36:28 +01:00
initctl license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
journal mmap-cache: drop ret_size from mmap_cache_get() 2020-12-13 11:14:43 +00:00
journal-remote fileio: teach read_full_file_full() to read from offset/with maximum size 2020-12-01 14:17:47 +01:00
kernel-install kernel-install: drop redundant "/" 2020-11-24 11:18:40 +01:00
libsystemd sd-device: make TAGS= property prefixed and suffixed with ":" 2020-12-14 14:04:53 +09:00
libsystemd-network sd-dhcp-client: correct retransmission timeout to match RFC 2020-12-14 18:19:29 -05:00
libudev license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
locale license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
login logind: use free_and_strdup() where appropriate 2020-12-09 10:09:11 +01:00
machine Make support for nscd flushing optional 2020-12-07 19:46:02 +01:00
machine-id-setup license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
modules-load license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
network Merge pull request #17960 from yuwata/network-log-routing-policy-rule 2020-12-14 22:22:51 +00:00
notify license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
nspawn nspawn: remove outdated comment regarding bpffs 2020-12-14 10:50:42 +01:00
nss-myhostname license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
nss-mymachines nss-mymachines: initialize logging 2020-12-10 20:52:03 +01:00
nss-resolve nss-resolve: initialize logging, log json errors 2020-12-10 20:50:01 +01:00
nss-systemd nss-systemd: initialize logging 2020-12-10 20:51:59 +01:00
oom test: use for(;;) instead of while(true) 2020-11-27 14:35:20 +09:00
partition fileio: teach read_full_file_full() to read from offset/with maximum size 2020-12-01 14:17:47 +01:00
path license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
portable license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
pstore pstore: use log_oom() 2020-11-20 02:59:02 +09:00
quotacheck license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
random-seed license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
rc-local-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
remount-fs license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
reply-password license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
resolve Drop compat "gateway" name 2020-12-10 20:44:41 +01:00
rfkill license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
run license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
run-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
shared tree-wide: fix typo 2020-12-14 12:05:55 +00:00
shutdown tree-wide: update "that that" 2020-11-18 17:23:00 +09:00
sleep license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
socket-proxy license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
stdio-bridge license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sulogin-shell license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sysctl license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
system-update-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemctl systemctl: fix potential pointer overflow 2020-11-20 21:58:47 +09:00
systemd meson: check that cxx variable is set before using it 2020-12-04 08:35:56 +01:00
sysusers specifiers: introduce common macros for generating specifier tables 2020-11-25 14:13:02 +09:00
sysv-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
test sd-device: make TAGS= property prefixed and suffixed with ":" 2020-12-14 14:04:53 +09:00
time-wait-sync license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
timedate timedate: use localtime_or_gmtime_r() and mktime_or_timegm() 2020-11-21 04:28:45 +09:00
timesync meson: add option to skip installing to $sysconfdir 2020-11-12 11:21:46 +01:00
tmpfiles tree-wide: sort specifiers and move common comments to specifier.h 2020-11-25 15:12:27 +09:00
tty-ask-password-agent license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
udev tree-wide: fix typo 2020-12-14 12:05:55 +00:00
update-done license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
update-utmp tree-wide: use return value of log_xxx_errno() 2020-11-20 02:58:27 +09:00
user-sessions license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
userdb tree-wide: unsetenv cannot fail 2020-11-10 15:52:32 +01:00
vconsole license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
veritysetup veritysetup: also place udev socket dep 2020-12-10 20:44:12 +01:00
version tree-wide: spellcheck using codespell 2020-04-16 18:00:40 +02:00
volatile-root license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
xdg-autostart-generator license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00