mirror of
https://github.com/bol-van/zapret.git
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52 lines
1.4 KiB
Bash
52 lines
1.4 KiB
Bash
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# there's no route_localnet for ipv6
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# the best we can is to route to link local of the incoming interface
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# OUTPUT - can DNAT to ::1
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# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
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# not a good idea to expose tpws to the world (bind to ::)
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get_ipv6_linklocal()
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{
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# $1 - interface name. if empty - any interface
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if exists ip ; then
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local dev
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[ -n "$1" ] && dev="dev $1"
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ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
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else
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ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Link.*$/\1/;t;d' | head -n 1
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fi
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}
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get_ipv6_global()
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{
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# $1 - interface name. if empty - any interface
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if exists ip ; then
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local dev
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[ -n "$1" ] && dev="dev $1"
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ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
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else
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ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Global.*$/\1/;t;d' | head -n 1
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fi
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}
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iface_is_up()
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{
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# $1 - interface name
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[ -f /sys/class/net/$1/operstate ] || return
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local state
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read state </sys/class/net/$1/operstate
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[ "$state" != "down" ]
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}
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wait_ifup()
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{
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# $1 - interface name
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local ct=0
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while
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iface_is_up $1 && return
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[ "$ct" -ge "$IFUP_WAIT_SEC" ] && break
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echo waiting for ifup of $1 for another $(($IFUP_WAIT_SEC - $ct)) seconds ...
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ct=$(($ct+1))
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sleep 1
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do :; done
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false
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}
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