2.4.5-RC radvd: 4 DNS Servers one too many in DHCPv6 Options

  • I just noticed this oddity when adding two more DNS servers here:

    Services/DHCPv6 Server & RA/<interface>/DHCPv6 Server
    DHCPv6 Options:
    DNS Servers: 0..3 IPv6 addresses ok

    • When 4 IPv6 addresses entered, radvd does not start

    Router Advertisements:
    Route mode: Assisted RA Flags
    DNS Configuration:

  • I'm currently on 2.4.5-RC (amd64) built on Sat Feb 08 13:43:43 EST 2020
    These entries might be related in System General Log:
    /services_dhcpv6.php: The command '/usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog' returned exit code '1', the output was ''

  • diff radvd.conf radvd_ng.conf 
    < 	RDNSS 2620:fe::fe 2620:fe::9 2a00:1098:2c::1 { };
    > 	RDNSS 2620:fe::fe 2620:fe::9 2a00:1098:2c::1 2a00:1098:2b::1 { };

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