[Dnsmasq-discuss] SLAAC is working, but DHCPv6 isn't

Neil Jerram Neil.Jerram at metaswitch.com
Fri Oct 24 13:28:42 BST 2014

Hi Ken,

> Running a packet capture on both my server and a host, I can see the
> "solict" packet from the host to the server; however the server doesn't
> send an "advertise" packet back to the client (but logging in syslog
> says that it *did* send a DHCPADVERTISE, and shows a valid IPv6 address
> that it "offered" the client.)
> No firewall rules prevent this communication; they're wide open for
> internal traffic.
> Would anyone have ideas on why dnsmasq isn't replying to the solicit
> (but saying that it did)?

How sure are you that dnsmasq doesn't send the DHCPADVERTISE?  Have
you already done something else, e.g. running tcpdump, in order to be
sure that that message isn't sent?  Could it be that the message is
sent but for some reason doesn't reach the client?


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