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scan_ppp() {
config_get ifname "$1" ifname
pppdev="${pppdev:-0}"
config_set "$1" ifname "ppp$pppdev"
config_set "$1" unit "$pppdev"
}
start_pppd() {
local cfg="$1"; shift
# make sure only one pppd process is started
lock "/var/lock/ppp-${cfg}"
local pid="$(head -n1 /var/run/ppp-${cfg}.pid 2>/dev/null)"
[ -d "/proc/$pid" ] && grep pppd "/proc/$pid/cmdline" 2>/dev/null >/dev/null && {
lock -u "/var/lock/ppp-${cfg}"
return 0
}
config_get device "$cfg" device
config_get unit "$cfg" unit
config_get username "$cfg" username
config_get password "$cfg" password
config_get keepalive "$cfg" keepalive
config_get connect "$cfg" connect
config_get disconnect "$cfg" disconnect
config_get pppd_options "$cfg" pppd_options
interval="${keepalive##*[, ]}"
[ "$interval" != "$keepalive" ] || interval=5
config_get demand "$cfg" demand
[ -n "$demand" ] && echo "nameserver 1.1.1.1" > /tmp/resolv.conf.auto
/usr/sbin/pppd "$@" \
${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}} \
${demand:+precompiled-active-filter /etc/ppp/filter demand idle }${demand:-persist} \
usepeerdns \
defaultroute \
replacedefaultroute \
${username:+user "$username" password "$password"} \
linkname "$cfg" \
ipparam "$cfg" \
${connect:+connect "$connect"} \
${disconnect:+disconnect "$disconnect"} \
${pppd_options}
lock -u "/var/lock/ppp-${cfg}"
}
setup_interface_ppp() {
local iface="$1"
local config="$2"
config_get device "$config" device
config_get mtu "$cfg" mtu
mtu=${mtu:-1492}
start_pppd "$config" \
mtu $mtu mru $mtu \
"$device"
}
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