It is repeatable! but I could not found the pattern!
I didn't find any problem in the last few days, but now it happened again!
The DNS api.m.duoku.com is a CNAME, and the upstream returned the CNAME to my
local dnsmasq:
Is it correct for the upstream to return CNAME to local dnsmasq?
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Thanks, Simon.
The access points are all on vlan 9 (the management vlan). They serve
wireless clients on vlans 3, 4 and 5 but they don't have interfaces on
these vlans.
What's really baffling me is that nothing has changed with the network
configuration. I've been through the configuration of the
So, the same machine, with the same MAC address, seems to be talking to
the dnsmasq DHCP server from (at least) three different subnets
more-or-less simultaneously. This is not good, as the DHCP protocol (for
IPv4, at least) assumes each interface will get _one_ address. Dnsmasq
is chasing its tail
