2020-12-21 08:50:15 +00:00
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#!/bin/bash
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2021-08-14 05:55:01 +00:00
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[[ -n "$DEBUG" ]] && set -x
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2020-12-21 08:50:15 +00:00
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2021-08-14 05:55:01 +00:00
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interface="$(ip link show | awk '/ ppp/ {print substr($2, 1, length($2)-1)}')"
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addr="$(ip addr show dev "$interface" | awk '/inet / {print $2}')"
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resolved="$(dig +short "${domain}" A)"
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if [[ -z "$addr" ]] || [[ -z "$resolved" ]]
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2020-12-21 08:50:15 +00:00
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then
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2021-08-14 05:55:01 +00:00
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echo "Address on '$interface' is '$addr' - resolved '$resolved'"
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2020-12-21 08:50:15 +00:00
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exit 3
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2021-08-14 05:55:01 +00:00
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elif [[ "$addr" == "$resolved" ]]
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then
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echo "Resolved IP for ${domain} matches current ip on $interface"
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exit 0
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else
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echo "Resolved $resolved for ${domain}, but got $addr on $interface!"
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exit 2
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2020-12-21 08:50:15 +00:00
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fi
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