Resolve failed since dns resolving system change

[zethis]

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Expected Behavior

host gotify.xxx.xxx
gotify.xxx.xxx is an alias for xxx.xxx.xxx
xxx.xxx.xxx has address 116.203.xxx.xxx

Current Behavior

First resolution is good
host gotify.xxx.xxx
gotify.xxx.xxx is an alias for xxx.xxx.xxx
xxx.xxx.xxx has address 116.203.xxx.xxx

Curling Gotify:
curl -IL gotify.xxx.xxx
200 OK

Only after curl gotify, second is bad:
host gotify.xxx.xxx
gotify.xxx.xxx is an alias for xxx.xxx.xxx
xxx.xxx.xxx has address 127.0.1.1

And curl response:

curl: (7) Failed to connect to gotify.xxx.xxx port 80: Connection refused

Steps to Reproduce

1. Wireguard server is a container, gotify is a container, on the same public IP.
2. Gotify Dns should be a CNAME (i guess)
3. Wireguard client is a container on another hardware and public IP
4. Curl gotify from the wireguard client container
5. Wg-client ="TUNNEL"> Wg-server > Gotify

Environment

OS: UBUNTU 20.04
CPU architecture: x86_64
Working image of Wireguard: image: linuxserver/wireguard:amd64-v1.0.20200513-ls25
How docker service was installed:

curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh

Command used to create docker container (run/create/compose/screenshot)

docker-compose

version: "3"
services:
  wireguard:
    container_name: 'wireguard'
    image: linuxserver/wireguard
    restart: 'unless-stopped'
    volumes:
      - /root/docker/wg0.conf:/config/wg0.conf
      - /lib/modules:/lib/modules
    sysctls:
      - "net.ipv4.conf.all.rp_filter=2"
      - "net.ipv4.conf.all.src_valid_mark=1"
      - "net.ipv6.conf.all.disable_ipv6=0"
    cap_add:
      - NET_ADMIN
      - sys_module
    networks:
      - wireguard-client
      - zethis 

Docker logs

No Log

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[zethis]

up

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.