Dns cache working in haproxy 22.2.20-6e457a2?

Help!
1

I was getting some quota exceeded from the dns server, and noticed that this was probably the haproxy. It looks like that the server from the backend is queried around 4 times per second. I would expect only to see this once every 20 seconds.

I grab traffic like this

tcpdump -A -qq -nn -i eth1 port 53 and net x.x.x.x | grep servername

I have a backend configured with

default-server check resolvers dnssvrs1

and a resolvers configured as

78
79 resolvers dnssvrs1
80 parse-resolv-conf
81 #nameserver dns1
82 #nameserver dns2
83 #nameserver dns3
84 #nameserver dns4
85 timeout resolve 1s
86 timeout retry 1s
87 hold valid 20s

2

Even adding to the server config inter 30s does not change anything

3

these two suggestions also do not have any effect.

adding
timeout resolve 10s

or changing

init-addr last,libc,none
to

init-addr last,none

4

Also what is annoying that there are AAAA lookups while ipv6 is disabled on the host. So at least half the requests are useless any way.

5

resolve-prefer ipv4

does not change anything

6

same

https://www.mail-archive.com/haproxy@formilux.org/msg36373.html

7

Hmmmm, checking again, and totally different request pattern. Maybe these caches are not being used during x minutes after reload?