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net: document up_before_preup for BSD

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William Hubbs 2011-12-28 11:17:58 -06:00
parent 26ceddae5e
commit 1875db4ff6
1 changed files with 11 additions and 0 deletions
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doc/net.example.BSD.in
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@ -388,6 +388,17 @@
# #
# ${IFACE} is set to the interface being brought up/down # ${IFACE} is set to the interface being brought up/down
# ${IFVAR} is ${IFACE} converted to variable name bash allows # ${IFVAR} is ${IFACE} converted to variable name bash allows
#
# For historical and compatibility reasons, preup is actually normally called
# in the following sequence: up ; preup ; up.
# The first up causes the kernel to initialize the device, so
# that it is available for use in the preup function. However, for some
# hardware, e.g. CAN devices, some configuration is needed before trying to up
# the interface will actually work. For such hardware, the
# up_before_preup variables will allow skipping the first up call if set
# to yes.
#up_before_preup_IFVAR="NO"
#up_before_preup="NO"
#preup() { #preup() {
# # Remember to return 0 on success # # Remember to return 0 on success