Some versions of killall do support the `killall -SIGNAL` syntax and
have only `-s SIGNAL` which should be supported everywhere.
I see the problem with *killall (PSmisc) 23.3* on latest TurrisOS 5.2
Signed-off-by: Jan Baier <jan.baier@amagical.net>
support for 21.02.0-rc2 and up
support for reloading a single interface on ifup/ifupdate
rename config file
updated shellcheck compatibility
remove obsolete create/remove_lock
interface processing optimizations to speed up reloads
drop dependency on curl in user scripts
uniform styling of functions
Signed-off-by: Stan Grishin <stangri@melmac.net>