23 lines
626 B
Text
23 lines
626 B
Text
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#!/bin/bash
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LOOPBACK="loopback"
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ANYCAST="{{ anycast_ipv4 | ipaddr('address') }}"
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ANYCAST_PRESENT=false
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if ping -c 1 "${ANYCAST}" > /dev/null 2>&1 ; then
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ANYCAST_PRESENT=true
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fi
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DNS_PRESENT=false
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if /sbin/resolvconf -l "${LOOPBACK}" > /dev/null 2>&1 ; then
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DNS_PRESENT=true
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fi
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if [[ ${ANYCAST_PRESENT} == true && ${DNS_PRESENT} == true ]] ; then
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exit 0
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elif [[ ${ANYCAST_PRESENT} == true && ${DNS_PRESENT} == false ]] ; then
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echo "nameserver ${ANYCAST}" | /sbin/resolvconf -a "${LOOPBACK}" -m 1
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elif [[ ${ANYCAST_PRESENT} == false && ${DNS_PRESENT} == true ]] ; then
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/sbin/resolvconf -d "${LOOPBACK}"
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fi
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