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dhcp: clarify code around is_linklocal() conditional

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This commit is contained in:
Franco Fichtner 2021-10-22 10:03:13 +02:00
parent f76691b984
commit e5e2e46300
1 changed files with 7 additions and 1 deletions
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8
src/etc/inc/plugins.inc.d/dhcpd.inc
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@ -308,11 +308,17 @@ function dhcpd_radvd_configure($verbose = false, $blacklist = array())
$radvdconf .= "\tAdvDefaultLifetime 0;\n";
}
/*
* Only a CARP VIP can inject a link-local address and it
* means we need to force that address into the RA message
* for failover to work.
*/
if (is_linklocal($ifcfgipv6)) {
$radvdconf .= "\tAdvSourceLLAddress off;\n";
$radvdconf .= "\tAdvRASrcAddress {\n";
$radvdconf .= "\t\t{$ifcfgipv6};\n";
$radvdconf .= "\t};\n";
/* to avoid wrong MAC being stuck in failover case only */
$radvdconf .= "\tAdvSourceLLAddress off;\n";
}
$stanzas = array();