can't listen on port 53 in docker

[vincentDcmps]

hello I try to start powerdns-auth on port 53 (need for dnsupdate) but I have always this error

Unable to bind UDP socket to '192.168.1.15:53': Permission denied

docker command:

 docker run --network=host -v "./pdns.conf:/etc/powerdns/pdns.conf" powerdns/pdns-auth-master:latest

and with a pdns.conf

dnsupdate=yes
launch=gsqlite3
gsqlite3-dnssec
gsqlite3-database=/var/lib/powerdns/pdns.sqlite3
allow-dnsupdate-from=192.168.1.41/24
local-address=192.168.1.15
local-port=53

I use network=host because goal is to use this container with a keepalived IP

I have try on two computer with no other dns listening and systemd-resolved disable and I have got always same issue
try to enable privileged container and got same issue
I have another container with pihole and no issue to listen on dedicated IP with port 53

[vincentDcmps]

I have found need to set
sysctl net.ipv4.ip_unprivileged_port_start=0
and it's work
diference with pihole is that PDNS is not launched as root