[Dnsmasq-discuss] No RA when router sollicitation sended

[Geert Stappers]

On Wed, Mar 17, 2021 at 04:01:48PM +0100, Daniel via Dnsmasq-discuss wrote:
> Hi,
> 
> I'm setting up a only ipv6 POC and face problem that dnsmasq soesn't answer
> to router sollicitation. Here is the output of dnsmasq
> 
> dnsmasq: started, version 2.84rc2 cachesize 2048
> dnsmasq: compile time options: IPv6 GNU-getopt DBus no-UBus no-i18n IDN DHCP
> DHCPv6 Lua TFTP conntrack ipset auth cryptohash DNSSEC loop-detect inotify
> dumpfile
> dnsmasq-dhcp: DHCP, IP range 192.168.12.190 -- 192.168.12.191, lease time 2m
> dnsmasq-dhcp: DHCP, IP range 192.168.10.195 -- 192.168.10.199, lease time 2m
> dnsmasq-dhcp: DHCP, IP range 192.168.210.100 -- 192.168.210.104, lease time 2m
> dnsmasq-dhcp: DHCP, IP range 192.168.10.50 -- 192.168.10.54, lease time 2m
> dnsmasq-dhcp: DHCPv4-derived IPv6 names on fd53:9b48:337:8b38::
> dnsmasq-dhcp: router advertisement on fd53:9b48:337:8b38::
> dnsmasq-dhcp: IPv6 router advertisement enabled
> dnsmasq-tftp: TFTP root is /tftpboot
> dnsmasq: reading /etc/resolvPrivate.conf
> dnsmasq: using nameserver 2001:db8:1298::#53
> dnsmasq: read /etc/hostsPrivate - 12 addresses
> 
> ip -6 a lan (relevant part)
>     inet6 fd53:9b48:337:8b38::254/64 scope global
>        valid_lft forever preferred_lft forever
>     inet6 fe80::5054:ff:fe12:3511/64 scope link
>        valid_lft forever preferred_lft forever
> 
> tcpdump output from a RS which never get answered
> 
> 15:54:09.204222 IP6 (flowlabel 0x8f8d5, hlim 255, next-header ICMPv6 (58)
> payload length: 16) fe80::5054:ff:fee5:338a > ff02::2: [icmp6 sum ok] ICMP6,
> router
> solicitation, length 16
>           source link-address option (1), length 8 (1): 52:54:00:e5:33:8a
>             0x0000:  5254 00e5 338a
> 
> I also tried with constructor in dnsmasq.conf like
> 
> dhcp-range=::1,::ffff:ffff, constructor=lan*,ra-names,64,2m
> 
> but no changes.
> 
> Any clue ?

At least share with us if --enable-ra  is inplace.


Groeten
Geert Stappers
-- 
Silence is hard to parse