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Gleb Pesin
f626f9c502
The kernel marks routes using no-carrier devices as dead linkdown. mwan3 strips linkdown but passes dead to ip route, which rejects the copied route and leaves policy tables incomplete. Strip both flags, including at end of line, and add a runtime test. Signed-off-by: Gleb Pesin <dormancygrace@gmail.com>
40 lines
876 B
Bash
Executable File
40 lines
876 B
Bash
Executable File
#!/bin/sh
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# shellcheck shell=busybox
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IPKG_INSTROOT=${IPKG_INSTROOT:-}
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export IPKG_INSTROOT
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. /lib/functions.sh
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. /lib/mwan3/mwan3.sh
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set -e
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mwan3_init
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sanitize_route()
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{
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printf '%s\n' "$1" | sed -ne "$MWAN3_ROUTE_LINE_EXP"
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}
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expected='192.0.2.0/24 dev eth0 scope link src 192.0.2.1 '
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for flags in 'dead linkdown' 'linkdown dead' 'dead' 'linkdown'; do
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actual=$(sanitize_route "$expected$flags")
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[ "$actual" = "$expected" ] || {
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echo "failed to sanitize route flags: $flags" >&2
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echo "expected: '$expected'" >&2
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echo "actual: '$actual'" >&2
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exit 1
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}
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done
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ipv6_route='fd00:1::/64 via fe80::dead dev eth0 proto static metric 1024 pref medium'
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actual=$(sanitize_route "$ipv6_route")
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[ "$actual" = "$ipv6_route" ] || {
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echo "failed to preserve an IPv6 address ending in dead" >&2
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echo "expected: '$ipv6_route'" >&2
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echo "actual: '$actual'" >&2
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exit 1
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}
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